<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:4dc8f7bc-1d62-4ea6-9077-6327dd035fa0,g:d18285cc-34a7-428c-b61f-628b7f829ebc-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://graniteridgeresources.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="grnt-20251231.xsd#CONSOLIDATEDBALANCESHEETS"/>
  <link:calculationLink xlink:role="http://graniteridgeresources.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_0d6f6b16-b1be-4c78-b6a2-0bec0b0f427e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesNoncurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_637f029e-f4ab-4425-b85a-172a02f024e8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebt"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_0d6f6b16-b1be-4c78-b6a2-0bec0b0f427e" xlink:to="loc_us-gaap_LongTermDebt_637f029e-f4ab-4425-b85a-172a02f024e8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationsNoncurrent_77a1337d-da4a-4e3c-94cd-8fa2b731d877" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationsNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_0d6f6b16-b1be-4c78-b6a2-0bec0b0f427e" xlink:to="loc_us-gaap_AssetRetirementObligationsNoncurrent_77a1337d-da4a-4e3c-94cd-8fa2b731d877" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_d17b6f61-bcad-42e2-8690-7878137279be" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_0d6f6b16-b1be-4c78-b6a2-0bec0b0f427e" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_d17b6f61-bcad-42e2-8690-7878137279be" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesNoncurrent_8defb348-72d0-4bc4-884c-2b6369c83859" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilitiesNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_0d6f6b16-b1be-4c78-b6a2-0bec0b0f427e" xlink:to="loc_us-gaap_DerivativeLiabilitiesNoncurrent_8defb348-72d0-4bc4-884c-2b6369c83859" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_36d43d40-4dcc-443e-9513-2037a6e23a21" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_e2ce349e-9044-43fb-b075-e1751df6e8a8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_36d43d40-4dcc-443e-9513-2037a6e23a21" xlink:to="loc_us-gaap_CommitmentsAndContingencies_e2ce349e-9044-43fb-b075-e1751df6e8a8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_ce231053-f4aa-4e19-b852-ffb96505470a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_36d43d40-4dcc-443e-9513-2037a6e23a21" xlink:to="loc_us-gaap_Liabilities_ce231053-f4aa-4e19-b852-ffb96505470a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_da52d7da-f3fb-47c3-84f7-437a67a58b22" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_36d43d40-4dcc-443e-9513-2037a6e23a21" xlink:to="loc_us-gaap_StockholdersEquity_da52d7da-f3fb-47c3-84f7-437a67a58b22" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_94904ad5-1105-4526-b55f-f719a68fdf3f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Cash_e36e1914-4b86-4e27-90f7-62def5cd2d58" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Cash"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_94904ad5-1105-4526-b55f-f719a68fdf3f" xlink:to="loc_us-gaap_Cash_e36e1914-4b86-4e27-90f7-62def5cd2d58" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedFeesAndOtherRevenueReceivable_5d150934-d5f5-4178-820e-afbda5cdbac2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccruedFeesAndOtherRevenueReceivable"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_94904ad5-1105-4526-b55f-f719a68fdf3f" xlink:to="loc_us-gaap_AccruedFeesAndOtherRevenueReceivable_5d150934-d5f5-4178-820e-afbda5cdbac2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_0b02b871-3f8f-4c29-a396-8c6c549736f8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquitySecuritiesFvNi"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_94904ad5-1105-4526-b55f-f719a68fdf3f" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_0b02b871-3f8f-4c29-a396-8c6c549736f8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_8a5389bc-4ab8-465a-8300-d878b888c4b9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_94904ad5-1105-4526-b55f-f719a68fdf3f" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_8a5389bc-4ab8-465a-8300-d878b888c4b9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_AdvancesToOperators_fde9b30d-199b-4564-a7b7-254d9c0add26" xlink:href="grnt-20251231.xsd#grnt_AdvancesToOperators"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_94904ad5-1105-4526-b55f-f719a68fdf3f" xlink:to="loc_grnt_AdvancesToOperators_fde9b30d-199b-4564-a7b7-254d9c0add26" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsCurrent_6844a5e9-41bd-406d-a61f-ac2e3e8c9c29" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeAssetsCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_94904ad5-1105-4526-b55f-f719a68fdf3f" xlink:to="loc_us-gaap_DerivativeAssetsCurrent_6844a5e9-41bd-406d-a61f-ac2e3e8c9c29" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OilAndGasPropertySuccessfulEffortMethodNet_b0ab347d-b549-4895-a8db-9e5854c662b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OilAndGasPropertySuccessfulEffortMethodNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OilAndGasPropertySuccessfulEffortMethodGross_5fb9c6c2-f07b-41a5-82d2-2c01dad0e160" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OilAndGasPropertySuccessfulEffortMethodGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OilAndGasPropertySuccessfulEffortMethodNet_b0ab347d-b549-4895-a8db-9e5854c662b7" xlink:to="loc_us-gaap_OilAndGasPropertySuccessfulEffortMethodGross_5fb9c6c2-f07b-41a5-82d2-2c01dad0e160" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OilAndGasPropertySuccessfulEffortMethodAccumulatedDepreciationDepletionAndAmortization_fe35832b-5559-4edc-9e80-790385c419b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OilAndGasPropertySuccessfulEffortMethodAccumulatedDepreciationDepletionAndAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OilAndGasPropertySuccessfulEffortMethodNet_b0ab347d-b549-4895-a8db-9e5854c662b7" xlink:to="loc_us-gaap_OilAndGasPropertySuccessfulEffortMethodAccumulatedDepreciationDepletionAndAmortization_fe35832b-5559-4edc-9e80-790385c419b3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_feccd720-7859-45d9-8766-3566f79eb9cc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_e2305e8a-444f-4b29-be6f-e18185a558f6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_feccd720-7859-45d9-8766-3566f79eb9cc" xlink:to="loc_us-gaap_LiabilitiesCurrent_e2305e8a-444f-4b29-be6f-e18185a558f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_210bfcc3-7147-45ab-a9a5-f7701659ee67" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_feccd720-7859-45d9-8766-3566f79eb9cc" xlink:to="loc_us-gaap_LiabilitiesNoncurrent_210bfcc3-7147-45ab-a9a5-f7701659ee67" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_a2411a7e-3511-428e-a926-9406753a0ad3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_23848834-a55b-41cf-a3c4-ab88f63e2da4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_a2411a7e-3511-428e-a926-9406753a0ad3" xlink:to="loc_us-gaap_CommonStockValue_23848834-a55b-41cf-a3c4-ab88f63e2da4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_c9cfe61d-2b89-4611-9a4a-187a6bd4a038" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_a2411a7e-3511-428e-a926-9406753a0ad3" xlink:to="loc_us-gaap_AdditionalPaidInCapital_c9cfe61d-2b89-4611-9a4a-187a6bd4a038" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_8b776afa-6e60-48b6-b72c-86887c949814" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_a2411a7e-3511-428e-a926-9406753a0ad3" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_8b776afa-6e60-48b6-b72c-86887c949814" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonValue_5a170999-e3de-45f5-89b2-6df2fa21ee00" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockCommonValue"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_a2411a7e-3511-428e-a926-9406753a0ad3" xlink:to="loc_us-gaap_TreasuryStockCommonValue_5a170999-e3de-45f5-89b2-6df2fa21ee00" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_TotalLongTermAssets_80524cff-baca-425c-b4e5-44221bea2eb9" xlink:href="grnt-20251231.xsd#grnt_TotalLongTermAssets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_559af209-01d5-4ed8-9f18-46e070e7e5db" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_TotalLongTermAssets_80524cff-baca-425c-b4e5-44221bea2eb9" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_559af209-01d5-4ed8-9f18-46e070e7e5db" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsNoncurrent_5ad55a03-24f3-44dc-9391-6e3efec43e6f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeAssetsNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_TotalLongTermAssets_80524cff-baca-425c-b4e5-44221bea2eb9" xlink:to="loc_us-gaap_DerivativeAssetsNoncurrent_5ad55a03-24f3-44dc-9391-6e3efec43e6f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_fd946c20-3a2c-4e96-80d6-f693bc6ddfd2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_baa78368-d354-484a-a173-84f38cfea84b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_fd946c20-3a2c-4e96-80d6-f693bc6ddfd2" xlink:to="loc_us-gaap_AssetsCurrent_baa78368-d354-484a-a173-84f38cfea84b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OilAndGasPropertySuccessfulEffortMethodNet_012b7211-11ac-4591-a036-b5ff5ead2f9f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OilAndGasPropertySuccessfulEffortMethodNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_fd946c20-3a2c-4e96-80d6-f693bc6ddfd2" xlink:to="loc_us-gaap_OilAndGasPropertySuccessfulEffortMethodNet_012b7211-11ac-4591-a036-b5ff5ead2f9f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_TotalLongTermAssets_eb437e75-885a-4461-abd2-19c147fcc986" xlink:href="grnt-20251231.xsd#grnt_TotalLongTermAssets"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_fd946c20-3a2c-4e96-80d6-f693bc6ddfd2" xlink:to="loc_grnt_TotalLongTermAssets_eb437e75-885a-4461-abd2-19c147fcc986" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_17cdb0d9-00e5-4883-8a78-ebb0bece6cad" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_4a16b7a8-1e0f-4ae6-93d8-a9ef164c91f6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_17cdb0d9-00e5-4883-8a78-ebb0bece6cad" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_4a16b7a8-1e0f-4ae6-93d8-a9ef164c91f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_b485c893-9d02-4a9e-8993-62e50384b696" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_17cdb0d9-00e5-4883-8a78-ebb0bece6cad" xlink:to="loc_us-gaap_LongTermDebtCurrent_b485c893-9d02-4a9e-8993-62e50384b696" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_7da72e5d-1a5f-4083-a96c-0d4fc54e57bc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_17cdb0d9-00e5-4883-8a78-ebb0bece6cad" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_7da72e5d-1a5f-4083-a96c-0d4fc54e57bc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesCurrent_019c3669-d306-7dea-9939-7b249f45af2b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilitiesCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_17cdb0d9-00e5-4883-8a78-ebb0bece6cad" xlink:to="loc_us-gaap_DerivativeLiabilitiesCurrent_019c3669-d306-7dea-9939-7b249f45af2b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://graniteridgeresources.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="simple" xlink:href="grnt-20251231.xsd#CONSOLIDATEDSTATEMENTSOFOPERATIONS"/>
  <link:calculationLink xlink:role="http://graniteridgeresources.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_510f59cd-59f0-4f07-9ecd-cd220fe6e064" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_2a7bac9b-ba53-4ead-9967-107047fb4cd0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_510f59cd-59f0-4f07-9ecd-cd220fe6e064" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_2a7bac9b-ba53-4ead-9967-107047fb4cd0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1a1e3a09-70e3-4e96-83af-0f55700563e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_510f59cd-59f0-4f07-9ecd-cd220fe6e064" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1a1e3a09-70e3-4e96-83af-0f55700563e5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_68cd33ef-9254-4322-9c2a-1803a1ddfcd8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_39056d2c-46bf-4ad8-9225-263020dd358a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_68cd33ef-9254-4322-9c2a-1803a1ddfcd8" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_39056d2c-46bf-4ad8-9225-263020dd358a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_91e5dc1c-0717-4c12-9021-680e9cf11a18" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingExpenses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_68cd33ef-9254-4322-9c2a-1803a1ddfcd8" xlink:to="loc_us-gaap_OperatingExpenses_91e5dc1c-0717-4c12-9021-680e9cf11a18" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_292d21a7-e578-4ad7-ae8b-68d56f13c37a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_19bb031b-24a0-44ef-82b8-8c427ada3a3e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_292d21a7-e578-4ad7-ae8b-68d56f13c37a" xlink:to="loc_us-gaap_InterestExpenseNonoperating_19bb031b-24a0-44ef-82b8-8c427ada3a3e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiGainLoss_56776106-bf66-4cd7-bd7e-8182a76e5e49" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquitySecuritiesFvNiGainLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_292d21a7-e578-4ad7-ae8b-68d56f13c37a" xlink:to="loc_us-gaap_EquitySecuritiesFvNiGainLoss_56776106-bf66-4cd7-bd7e-8182a76e5e49" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_78400540-edf8-42e7-8044-4d6cee139931" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_292d21a7-e578-4ad7-ae8b-68d56f13c37a" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_78400540-edf8-42e7-8044-4d6cee139931" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_fad13bf4-06e0-41f9-8854-a648b7698809" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_292d21a7-e578-4ad7-ae8b-68d56f13c37a" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_fad13bf4-06e0-41f9-8854-a648b7698809" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_WarrantsGainLossNetOnChangeInFairValueOfWarrantLiability_b729d711-04dc-4a56-868c-cc6debf1dfab" xlink:href="grnt-20251231.xsd#grnt_WarrantsGainLossNetOnChangeInFairValueOfWarrantLiability"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_292d21a7-e578-4ad7-ae8b-68d56f13c37a" xlink:to="loc_grnt_WarrantsGainLossNetOnChangeInFairValueOfWarrantLiability_b729d711-04dc-4a56-868c-cc6debf1dfab" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_4aafbca3-ca9c-4a13-b106-9ed24b538ade" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_OtherCostAndExpenseOperatingNet_2ef43a46-b4dc-4af7-bee0-b7f693a2763f" xlink:href="grnt-20251231.xsd#grnt_OtherCostAndExpenseOperatingNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_4aafbca3-ca9c-4a13-b106-9ed24b538ade" xlink:to="loc_grnt_OtherCostAndExpenseOperatingNet_2ef43a46-b4dc-4af7-bee0-b7f693a2763f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_90135a86-b8ad-44d5-a1a6-7a8dfc74a03c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ImpairmentOfLongLivedAssetsHeldForUse"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_4aafbca3-ca9c-4a13-b106-9ed24b538ade" xlink:to="loc_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_90135a86-b8ad-44d5-a1a6-7a8dfc74a03c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_ProductionAndAdValoremTaxes_eeda67e1-449f-4507-bd5e-4bc79e200067" xlink:href="grnt-20251231.xsd#grnt_ProductionAndAdValoremTaxes"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_4aafbca3-ca9c-4a13-b106-9ed24b538ade" xlink:to="loc_grnt_ProductionAndAdValoremTaxes_eeda67e1-449f-4507-bd5e-4bc79e200067" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepletionOfOilAndGasProperties_5a1a1211-39f0-4c67-986d-c140a95c3fcd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepletionOfOilAndGasProperties"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_4aafbca3-ca9c-4a13-b106-9ed24b538ade" xlink:to="loc_us-gaap_DepletionOfOilAndGasProperties_5a1a1211-39f0-4c67-986d-c140a95c3fcd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseExpense_de8f3c36-14b1-4a3c-8041-c597d0ca1080" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseExpense"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_4aafbca3-ca9c-4a13-b106-9ed24b538ade" xlink:to="loc_us-gaap_OperatingLeaseExpense_de8f3c36-14b1-4a3c-8041-c597d0ca1080" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_7121941c-a078-4cbf-8107-062ac9ba4208" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_4aafbca3-ca9c-4a13-b106-9ed24b538ade" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_7121941c-a078-4cbf-8107-062ac9ba4208" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_f068b196-e0f1-417d-9f08-83e339b5a204" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_d30d1daa-fbdc-49e5-93a2-414f1552aa3b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_f068b196-e0f1-417d-9f08-83e339b5a204" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_d30d1daa-fbdc-49e5-93a2-414f1552aa3b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_2d20f7c5-82a3-4eed-a8ce-08a4302c2894" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_f068b196-e0f1-417d-9f08-83e339b5a204" xlink:to="loc_us-gaap_OperatingIncomeLoss_2d20f7c5-82a3-4eed-a8ce-08a4302c2894" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://graniteridgeresources.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="simple" xlink:href="grnt-20251231.xsd#CONSOLIDATEDSTATEMENTSOFCASHFLOWS"/>
  <link:calculationLink xlink:role="http://graniteridgeresources.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_56585357-e34f-48cf-8529-9f02674f0026" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_4267bc71-de50-4a9b-b986-1c142c181a7a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNoncashIncomeExpense"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_56585357-e34f-48cf-8529-9f02674f0026" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_4267bc71-de50-4a9b-b986-1c142c181a7a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_94162644-d105-4f9c-bdc2-66872aded30c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_56585357-e34f-48cf-8529-9f02674f0026" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_94162644-d105-4f9c-bdc2-66872aded30c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_fd0ea7f8-ce63-418f-b41b-dbb20a0c28be" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_56585357-e34f-48cf-8529-9f02674f0026" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_fd0ea7f8-ce63-418f-b41b-dbb20a0c28be" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_48a3cdbf-52ef-4570-bd2a-754d4d72995c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_56585357-e34f-48cf-8529-9f02674f0026" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_48a3cdbf-52ef-4570-bd2a-754d4d72995c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_7533e3b2-f30d-4806-9d43-19b261e1f2fc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_56585357-e34f-48cf-8529-9f02674f0026" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_7533e3b2-f30d-4806-9d43-19b261e1f2fc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_736d1276-c076-4460-8b1c-bba97f7e02b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmortizationOfFinancingCosts"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_56585357-e34f-48cf-8529-9f02674f0026" xlink:to="loc_us-gaap_AmortizationOfFinancingCosts_736d1276-c076-4460-8b1c-bba97f7e02b3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts_d343e6f9-bc9b-4de3-a4dd-ca5692541d88" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_56585357-e34f-48cf-8529-9f02674f0026" xlink:to="loc_us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts_d343e6f9-bc9b-4de3-a4dd-ca5692541d88" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_cbd988d1-9305-4bf3-912a-ae4ba5c7aa29" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_56585357-e34f-48cf-8529-9f02674f0026" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_cbd988d1-9305-4bf3-912a-ae4ba5c7aa29" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_fc5da7f8-0dab-46fe-aa2f-e820cfcb5094" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_56585357-e34f-48cf-8529-9f02674f0026" xlink:to="loc_us-gaap_ShareBasedCompensation_fc5da7f8-0dab-46fe-aa2f-e820cfcb5094" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_d33ce57e-499a-47c4-9a82-ecb8ac2252ae" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_56585357-e34f-48cf-8529-9f02674f0026" xlink:to="loc_us-gaap_NetIncomeLoss_d33ce57e-499a-47c4-9a82-ecb8ac2252ae" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_5d8a304f-7c52-4bc8-b9f3-0d2d19750dd6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ImpairmentOfLongLivedAssetsHeldForUse"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_56585357-e34f-48cf-8529-9f02674f0026" xlink:to="loc_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_5d8a304f-7c52-4bc8-b9f3-0d2d19750dd6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepletionOfOilAndGasProperties_dc5edda1-0a20-4bc3-b337-755e1f9e7050" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepletionOfOilAndGasProperties"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_56585357-e34f-48cf-8529-9f02674f0026" xlink:to="loc_us-gaap_DepletionOfOilAndGasProperties_dc5edda1-0a20-4bc3-b337-755e1f9e7050" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherAccountsPayable_adbc6ccf-c742-420a-8f29-540dbc9abb1f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherAccountsPayable"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_56585357-e34f-48cf-8529-9f02674f0026" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherAccountsPayable_adbc6ccf-c742-420a-8f29-540dbc9abb1f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeCommonStockWarrantsNotDesignatedAsHedgingInstrumentsGainLossNet_69e62cf6-0ac5-432b-b066-89e2b89d4642" xlink:href="grnt-20251231.xsd#grnt_DerivativeCommonStockWarrantsNotDesignatedAsHedgingInstrumentsGainLossNet"/>
    <link:calculationArc order="14" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_56585357-e34f-48cf-8529-9f02674f0026" xlink:to="loc_grnt_DerivativeCommonStockWarrantsNotDesignatedAsHedgingInstrumentsGainLossNet_69e62cf6-0ac5-432b-b066-89e2b89d4642" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_b7c2e2cb-5b4b-4722-b1a9-fb7604bfe950" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfOilAndGasPropertyAndEquipment_ccd7dae9-8681-4c33-9931-e8fef5138588" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleOfOilAndGasPropertyAndEquipment"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_b7c2e2cb-5b4b-4722-b1a9-fb7604bfe950" xlink:to="loc_us-gaap_ProceedsFromSaleOfOilAndGasPropertyAndEquipment_ccd7dae9-8681-4c33-9931-e8fef5138588" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfEquitySecuritiesFvNi_2567a0e3-e4e8-4788-a257-ebc96c2c3c8a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleOfEquitySecuritiesFvNi"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_b7c2e2cb-5b4b-4722-b1a9-fb7604bfe950" xlink:to="loc_us-gaap_ProceedsFromSaleOfEquitySecuritiesFvNi_2567a0e3-e4e8-4788-a257-ebc96c2c3c8a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromAdvancesForConstruction_3b7b6304-352a-408c-bd42-556596dee335" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromAdvancesForConstruction"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_b7c2e2cb-5b4b-4722-b1a9-fb7604bfe950" xlink:to="loc_us-gaap_ProceedsFromAdvancesForConstruction_3b7b6304-352a-408c-bd42-556596dee335" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireOilAndGasPropertyAndEquipment_89d19e1e-bddd-40cc-8622-cf438be7a961" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireOilAndGasPropertyAndEquipment"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_b7c2e2cb-5b4b-4722-b1a9-fb7604bfe950" xlink:to="loc_us-gaap_PaymentsToAcquireOilAndGasPropertyAndEquipment_89d19e1e-bddd-40cc-8622-cf438be7a961" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToExploreAndDevelopOilAndGasProperties_c12475bb-b9b4-448f-b141-fdda84538f85" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToExploreAndDevelopOilAndGasProperties"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_b7c2e2cb-5b4b-4722-b1a9-fb7604bfe950" xlink:to="loc_us-gaap_PaymentsToExploreAndDevelopOilAndGasProperties_c12475bb-b9b4-448f-b141-fdda84538f85" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_PaymentOfDepositOnAcquisition_6bcc5472-84bd-4a38-ac20-aa8467daef07" xlink:href="grnt-20251231.xsd#grnt_PaymentOfDepositOnAcquisition"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_b7c2e2cb-5b4b-4722-b1a9-fb7604bfe950" xlink:to="loc_grnt_PaymentOfDepositOnAcquisition_6bcc5472-84bd-4a38-ac20-aa8467daef07" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_d64bb8a7-07bd-4f51-a851-4b819220f784" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_51eecebc-618f-47ae-a517-bdb41ef61b9c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_d64bb8a7-07bd-4f51-a851-4b819220f784" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_51eecebc-618f-47ae-a517-bdb41ef61b9c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_34fda291-ecae-45ed-abed-7d50d154bcf6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_d64bb8a7-07bd-4f51-a851-4b819220f784" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_34fda291-ecae-45ed-abed-7d50d154bcf6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_c07171e8-bea6-4d72-a48a-d378b26b51a2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_d64bb8a7-07bd-4f51-a851-4b819220f784" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_c07171e8-bea6-4d72-a48a-d378b26b51a2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_8f11ba3f-6bed-487a-9aa4-6f7a6702e932" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Cash_1ca217b7-452f-4dc3-877d-1739f3f19adf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Cash"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_8f11ba3f-6bed-487a-9aa4-6f7a6702e932" xlink:to="loc_us-gaap_Cash_1ca217b7-452f-4dc3-877d-1739f3f19adf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashNoncurrent_c4bcc888-af7a-4b17-b578-62ff4afb49be" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_8f11ba3f-6bed-487a-9aa4-6f7a6702e932" xlink:to="loc_us-gaap_RestrictedCashNoncurrent_c4bcc888-af7a-4b17-b578-62ff4afb49be" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_0fb15f62-aae4-4bde-8f0c-3e084095317d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfDebt_8754c919-bf0d-43e8-9b52-ddd8d9b818ad" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfDebt"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_0fb15f62-aae4-4bde-8f0c-3e084095317d" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfDebt_8754c919-bf0d-43e8-9b52-ddd8d9b818ad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebt_1b096d77-292e-4e4a-9098-ea93d0fb5e00" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfDebt"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_0fb15f62-aae4-4bde-8f0c-3e084095317d" xlink:to="loc_us-gaap_RepaymentsOfDebt_1b096d77-292e-4e4a-9098-ea93d0fb5e00" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt_92b53f84-77fc-4ed5-ad9d-113bfed5b0bf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_0fb15f62-aae4-4bde-8f0c-3e084095317d" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt_92b53f84-77fc-4ed5-ad9d-113bfed5b0bf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfFinancingCosts_c5c991ae-c9a6-462f-8384-bed0d7c20c26" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfFinancingCosts"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_0fb15f62-aae4-4bde-8f0c-3e084095317d" xlink:to="loc_us-gaap_PaymentsOfFinancingCosts_c5c991ae-c9a6-462f-8384-bed0d7c20c26" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_PaymentOfExpensesRelatedToFormation_c27754c2-a752-4074-8f2e-b009c72eee3a" xlink:href="grnt-20251231.xsd#grnt_PaymentOfExpensesRelatedToFormation"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_0fb15f62-aae4-4bde-8f0c-3e084095317d" xlink:to="loc_grnt_PaymentOfExpensesRelatedToFormation_c27754c2-a752-4074-8f2e-b009c72eee3a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_e8b576e2-aed5-4a2f-a984-fd50e49f39d9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_0fb15f62-aae4-4bde-8f0c-3e084095317d" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_e8b576e2-aed5-4a2f-a984-fd50e49f39d9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividends_e14989f0-d484-4a57-afef-a7125b2d8b60" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfDividends"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_0fb15f62-aae4-4bde-8f0c-3e084095317d" xlink:to="loc_us-gaap_PaymentsOfDividends_e14989f0-d484-4a57-afef-a7125b2d8b60" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_019c55dc-b10d-7837-8c2c-86e68f7c4a11" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_0fb15f62-aae4-4bde-8f0c-3e084095317d" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_019c55dc-b10d-7837-8c2c-86e68f7c4a11" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://graniteridgeresources.com/role/SummaryofSignificantAccountingPoliciesScheduleofGainLossonEquityInvestmentDetails" xlink:type="simple" xlink:href="grnt-20251231.xsd#SummaryofSignificantAccountingPoliciesScheduleofGainLossonEquityInvestmentDetails"/>
  <link:calculationLink xlink:role="http://graniteridgeresources.com/role/SummaryofSignificantAccountingPoliciesScheduleofGainLossonEquityInvestmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiGainLoss_019c9e8f-3cf6-74a0-b6ef-7b6f5b87c3ab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquitySecuritiesFvNiGainLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_019c9e8f-3cf6-74f1-9b5e-172500475bed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EquitySecuritiesFvNiGainLoss_019c9e8f-3cf6-74a0-b6ef-7b6f5b87c3ab" xlink:to="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_019c9e8f-3cf6-74f1-9b5e-172500475bed" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiRealizedGainLoss_019c9e8f-3cf6-7e2f-9b70-6a85f912b21c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquitySecuritiesFvNiRealizedGainLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EquitySecuritiesFvNiGainLoss_019c9e8f-3cf6-74a0-b6ef-7b6f5b87c3ab" xlink:to="loc_us-gaap_EquitySecuritiesFvNiRealizedGainLoss_019c9e8f-3cf6-7e2f-9b70-6a85f912b21c" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://graniteridgeresources.com/role/DerivativeFinancialInstrumentsScheduleofCommodityDerivativeInstrumentsDetails" xlink:type="simple" xlink:href="grnt-20251231.xsd#DerivativeFinancialInstrumentsScheduleofCommodityDerivativeInstrumentsDetails"/>
  <link:calculationLink xlink:role="http://graniteridgeresources.com/role/DerivativeFinancialInstrumentsScheduleofCommodityDerivativeInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_019c376b-dabc-79a3-8b9b-fa7b99faf090" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossOnDerivatives_019ca01b-5ae9-7460-b1e9-c82cd6fdc3a6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnrealizedGainLossOnDerivatives"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_019c376b-dabc-79a3-8b9b-fa7b99faf090" xlink:to="loc_us-gaap_UnrealizedGainLossOnDerivatives_019ca01b-5ae9-7460-b1e9-c82cd6fdc3a6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_NetCashPaymentsOnReceiptsFromDerivatives_019c376b-dabc-71ab-8965-dd52066451b3" xlink:href="grnt-20251231.xsd#grnt_NetCashPaymentsOnReceiptsFromDerivatives"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_019c376b-dabc-79a3-8b9b-fa7b99faf090" xlink:to="loc_grnt_NetCashPaymentsOnReceiptsFromDerivatives_019c376b-dabc-71ab-8965-dd52066451b3" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://graniteridgeresources.com/role/FairValueMeasurementsScheduleofFairValueofNetDerivativeInstrumentsDetails" xlink:type="simple" xlink:href="grnt-20251231.xsd#FairValueMeasurementsScheduleofFairValueofNetDerivativeInstrumentsDetails"/>
  <link:calculationLink xlink:role="http://graniteridgeresources.com/role/FairValueMeasurementsScheduleofFairValueofNetDerivativeInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeLiabilityNonCurrentSubjectToMasterNettingArrangementAfterOffset_dade43f2-c577-4e27-a1a6-b61e711492c4" xlink:href="grnt-20251231.xsd#grnt_DerivativeLiabilityNonCurrentSubjectToMasterNettingArrangementAfterOffset"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeLiabilitySubjectToMasterNettingArrangementNonCurrentAssetOffset_e8c673c9-6311-4505-9457-ffb6691a5e37" xlink:href="grnt-20251231.xsd#grnt_DerivativeLiabilitySubjectToMasterNettingArrangementNonCurrentAssetOffset"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_DerivativeLiabilityNonCurrentSubjectToMasterNettingArrangementAfterOffset_dade43f2-c577-4e27-a1a6-b61e711492c4" xlink:to="loc_grnt_DerivativeLiabilitySubjectToMasterNettingArrangementNonCurrentAssetOffset_e8c673c9-6311-4505-9457-ffb6691a5e37" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesNoncurrent_15d701b6-d63f-475f-9598-4ab70233c97a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilitiesNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_DerivativeLiabilityNonCurrentSubjectToMasterNettingArrangementAfterOffset_dade43f2-c577-4e27-a1a6-b61e711492c4" xlink:to="loc_us-gaap_DerivativeLiabilitiesNoncurrent_15d701b6-d63f-475f-9598-4ab70233c97a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeNet_eb3bfa53-a6a1-4c89-b847-b6afeb61c7d1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeFairValueOfDerivativeNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsNoncurrent_d36bd594-df4e-48e2-955f-2e29707647ca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeAssetsNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeNet_eb3bfa53-a6a1-4c89-b847-b6afeb61c7d1" xlink:to="loc_us-gaap_DerivativeAssetsNoncurrent_d36bd594-df4e-48e2-955f-2e29707647ca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsCurrent_9c727501-2fc2-4d92-afea-3e51ff06c705" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeAssetsCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeNet_eb3bfa53-a6a1-4c89-b847-b6afeb61c7d1" xlink:to="loc_us-gaap_DerivativeAssetsCurrent_9c727501-2fc2-4d92-afea-3e51ff06c705" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesCurrent_636982b5-9f04-4743-b3e7-d4c439bba207" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilitiesCurrent"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeNet_eb3bfa53-a6a1-4c89-b847-b6afeb61c7d1" xlink:to="loc_us-gaap_DerivativeLiabilitiesCurrent_636982b5-9f04-4743-b3e7-d4c439bba207" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesNoncurrent_44434398-f574-4939-9095-bf98454e377d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilitiesNoncurrent"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeNet_eb3bfa53-a6a1-4c89-b847-b6afeb61c7d1" xlink:to="loc_us-gaap_DerivativeLiabilitiesNoncurrent_44434398-f574-4939-9095-bf98454e377d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeLiabilityCurrentSubjectToMasterNettingArrangementAfterOffset_ea8212a6-9e5e-4c42-b6b8-a2b0f6ad43d5" xlink:href="grnt-20251231.xsd#grnt_DerivativeLiabilityCurrentSubjectToMasterNettingArrangementAfterOffset"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesCurrent_ad3713fc-6f66-4bc6-b544-f73e0f9f4eb3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_DerivativeLiabilityCurrentSubjectToMasterNettingArrangementAfterOffset_ea8212a6-9e5e-4c42-b6b8-a2b0f6ad43d5" xlink:to="loc_us-gaap_DerivativeLiabilitiesCurrent_ad3713fc-6f66-4bc6-b544-f73e0f9f4eb3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeLiabilitySubjectToMasterNettingArrangementCurrentAssetOffset_90bf03fe-da43-46fb-acb2-de557503f181" xlink:href="grnt-20251231.xsd#grnt_DerivativeLiabilitySubjectToMasterNettingArrangementCurrentAssetOffset"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_DerivativeLiabilityCurrentSubjectToMasterNettingArrangementAfterOffset_ea8212a6-9e5e-4c42-b6b8-a2b0f6ad43d5" xlink:to="loc_grnt_DerivativeLiabilitySubjectToMasterNettingArrangementCurrentAssetOffset_90bf03fe-da43-46fb-acb2-de557503f181" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeAssetNonCurrentSubjectToMasterNettingArrangementAfterOffsetAndDeduction_9d35f79f-8b47-4b0a-ba7c-375e2c8d9522" xlink:href="grnt-20251231.xsd#grnt_DerivativeAssetNonCurrentSubjectToMasterNettingArrangementAfterOffsetAndDeduction"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsNoncurrent_63a8e2b6-071b-40c3-b3ec-3c67b38c6cc8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeAssetsNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_DerivativeAssetNonCurrentSubjectToMasterNettingArrangementAfterOffsetAndDeduction_9d35f79f-8b47-4b0a-ba7c-375e2c8d9522" xlink:to="loc_us-gaap_DerivativeAssetsNoncurrent_63a8e2b6-071b-40c3-b3ec-3c67b38c6cc8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeAssetSubjectToMasterNettingArrangementNonCurrentLiabilityOffset_b49e9c18-4392-4e12-a727-a161172cd870" xlink:href="grnt-20251231.xsd#grnt_DerivativeAssetSubjectToMasterNettingArrangementNonCurrentLiabilityOffset"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_DerivativeAssetNonCurrentSubjectToMasterNettingArrangementAfterOffsetAndDeduction_9d35f79f-8b47-4b0a-ba7c-375e2c8d9522" xlink:to="loc_grnt_DerivativeAssetSubjectToMasterNettingArrangementNonCurrentLiabilityOffset_b49e9c18-4392-4e12-a727-a161172cd870" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeAssetCurrentSubjectToMasterNettingArrangementAfterOffsetAndDeduction_fd5e21ef-d11f-4f8c-97e4-f057f3d755d9" xlink:href="grnt-20251231.xsd#grnt_DerivativeAssetCurrentSubjectToMasterNettingArrangementAfterOffsetAndDeduction"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsCurrent_3fe58480-7d34-4bbd-b289-23c0c1165268" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeAssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_DerivativeAssetCurrentSubjectToMasterNettingArrangementAfterOffsetAndDeduction_fd5e21ef-d11f-4f8c-97e4-f057f3d755d9" xlink:to="loc_us-gaap_DerivativeAssetsCurrent_3fe58480-7d34-4bbd-b289-23c0c1165268" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeAssetSubjectToMasterNettingArrangementCurrentLiabilityOffset_ba8b32dd-1cdc-43ea-89ee-7e50961fadb8" xlink:href="grnt-20251231.xsd#grnt_DerivativeAssetSubjectToMasterNettingArrangementCurrentLiabilityOffset"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_DerivativeAssetCurrentSubjectToMasterNettingArrangementAfterOffsetAndDeduction_fd5e21ef-d11f-4f8c-97e4-f057f3d755d9" xlink:to="loc_grnt_DerivativeAssetSubjectToMasterNettingArrangementCurrentLiabilityOffset_ba8b32dd-1cdc-43ea-89ee-7e50961fadb8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeAssetLiabilityNetSubjectToMasterNettingArrangementOffset_9583a8cb-f621-4a7d-933e-4c40c23f0fbd" xlink:href="grnt-20251231.xsd#grnt_DerivativeAssetLiabilityNetSubjectToMasterNettingArrangementOffset"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeAssetSubjectToMasterNettingArrangementCurrentLiabilityOffset_ede92b79-2a60-4484-989e-20a4cb496f8e" xlink:href="grnt-20251231.xsd#grnt_DerivativeAssetSubjectToMasterNettingArrangementCurrentLiabilityOffset"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_DerivativeAssetLiabilityNetSubjectToMasterNettingArrangementOffset_9583a8cb-f621-4a7d-933e-4c40c23f0fbd" xlink:to="loc_grnt_DerivativeAssetSubjectToMasterNettingArrangementCurrentLiabilityOffset_ede92b79-2a60-4484-989e-20a4cb496f8e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeAssetSubjectToMasterNettingArrangementNonCurrentLiabilityOffset_1559b916-3c7a-48ce-b73c-88e4cb9316f7" xlink:href="grnt-20251231.xsd#grnt_DerivativeAssetSubjectToMasterNettingArrangementNonCurrentLiabilityOffset"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_DerivativeAssetLiabilityNetSubjectToMasterNettingArrangementOffset_9583a8cb-f621-4a7d-933e-4c40c23f0fbd" xlink:to="loc_grnt_DerivativeAssetSubjectToMasterNettingArrangementNonCurrentLiabilityOffset_1559b916-3c7a-48ce-b73c-88e4cb9316f7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeLiabilitySubjectToMasterNettingArrangementCurrentAssetOffset_6186d8fb-021f-4950-8e3e-bf49f07f0b3c" xlink:href="grnt-20251231.xsd#grnt_DerivativeLiabilitySubjectToMasterNettingArrangementCurrentAssetOffset"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_DerivativeAssetLiabilityNetSubjectToMasterNettingArrangementOffset_9583a8cb-f621-4a7d-933e-4c40c23f0fbd" xlink:to="loc_grnt_DerivativeLiabilitySubjectToMasterNettingArrangementCurrentAssetOffset_6186d8fb-021f-4950-8e3e-bf49f07f0b3c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeLiabilitySubjectToMasterNettingArrangementNonCurrentAssetOffset_684fb532-9d4a-4a41-983e-75fb6c01d57b" xlink:href="grnt-20251231.xsd#grnt_DerivativeLiabilitySubjectToMasterNettingArrangementNonCurrentAssetOffset"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_DerivativeAssetLiabilityNetSubjectToMasterNettingArrangementOffset_9583a8cb-f621-4a7d-933e-4c40c23f0fbd" xlink:to="loc_grnt_DerivativeLiabilitySubjectToMasterNettingArrangementNonCurrentAssetOffset_684fb532-9d4a-4a41-983e-75fb6c01d57b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://graniteridgeresources.com/role/FairValueMeasurementsScheduleofFairValueofNetDerivativeInstrumentsDetails_1" xlink:type="simple" xlink:href="grnt-20251231.xsd#FairValueMeasurementsScheduleofFairValueofNetDerivativeInstrumentsDetails_1"/>
  <link:calculationLink xlink:role="http://graniteridgeresources.com/role/FairValueMeasurementsScheduleofFairValueofNetDerivativeInstrumentsDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeNet_19d1ce6b-a39b-4234-83f0-23365193626d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeFairValueOfDerivativeNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeLiabilityNonCurrentSubjectToMasterNettingArrangementAfterOffset_b51ec4e5-197b-4516-8ab0-26078d635124" xlink:href="grnt-20251231.xsd#grnt_DerivativeLiabilityNonCurrentSubjectToMasterNettingArrangementAfterOffset"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeNet_19d1ce6b-a39b-4234-83f0-23365193626d" xlink:to="loc_grnt_DerivativeLiabilityNonCurrentSubjectToMasterNettingArrangementAfterOffset_b51ec4e5-197b-4516-8ab0-26078d635124" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeLiabilityCurrentSubjectToMasterNettingArrangementAfterOffset_73d59eae-c2b4-4e24-b195-0289bc417a77" xlink:href="grnt-20251231.xsd#grnt_DerivativeLiabilityCurrentSubjectToMasterNettingArrangementAfterOffset"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeNet_19d1ce6b-a39b-4234-83f0-23365193626d" xlink:to="loc_grnt_DerivativeLiabilityCurrentSubjectToMasterNettingArrangementAfterOffset_73d59eae-c2b4-4e24-b195-0289bc417a77" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeAssetNonCurrentSubjectToMasterNettingArrangementAfterOffsetAndDeduction_a0a0fee2-001b-4ccd-b53c-c519986f06ca" xlink:href="grnt-20251231.xsd#grnt_DerivativeAssetNonCurrentSubjectToMasterNettingArrangementAfterOffsetAndDeduction"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeNet_19d1ce6b-a39b-4234-83f0-23365193626d" xlink:to="loc_grnt_DerivativeAssetNonCurrentSubjectToMasterNettingArrangementAfterOffsetAndDeduction_a0a0fee2-001b-4ccd-b53c-c519986f06ca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_DerivativeAssetCurrentSubjectToMasterNettingArrangementAfterOffsetAndDeduction_56f33552-31e9-42be-a0c1-bbb9d1d73c59" xlink:href="grnt-20251231.xsd#grnt_DerivativeAssetCurrentSubjectToMasterNettingArrangementAfterOffsetAndDeduction"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeNet_19d1ce6b-a39b-4234-83f0-23365193626d" xlink:to="loc_grnt_DerivativeAssetCurrentSubjectToMasterNettingArrangementAfterOffsetAndDeduction_56f33552-31e9-42be-a0c1-bbb9d1d73c59" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://graniteridgeresources.com/role/AssetRetirementObligationsDetails" xlink:type="simple" xlink:href="grnt-20251231.xsd#AssetRetirementObligationsDetails"/>
  <link:calculationLink xlink:role="http://graniteridgeresources.com/role/AssetRetirementObligationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligation_e792cbe6-235f-4b41-8387-700c12f3d457" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligation"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationCurrent_1fa9ef80-8905-4596-a4b4-a3b9f2bdacdc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetRetirementObligation_e792cbe6-235f-4b41-8387-700c12f3d457" xlink:to="loc_us-gaap_AssetRetirementObligationCurrent_1fa9ef80-8905-4596-a4b4-a3b9f2bdacdc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationsNoncurrent_fbcd053a-e254-4527-aa3b-1177727d9d9b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationsNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetRetirementObligation_e792cbe6-235f-4b41-8387-700c12f3d457" xlink:to="loc_us-gaap_AssetRetirementObligationsNoncurrent_fbcd053a-e254-4527-aa3b-1177727d9d9b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://graniteridgeresources.com/role/IncomeTaxesScheduleofComponentsofIncomeTaxExpenseDetails" xlink:type="simple" xlink:href="grnt-20251231.xsd#IncomeTaxesScheduleofComponentsofIncomeTaxExpenseDetails"/>
  <link:calculationLink xlink:role="http://graniteridgeresources.com/role/IncomeTaxesScheduleofComponentsofIncomeTaxExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_86c5c5fe-3434-4187-8f81-9e8add96e22d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_d94a4e03-f56a-42a5-8384-357308205e6f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_86c5c5fe-3434-4187-8f81-9e8add96e22d" xlink:to="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_d94a4e03-f56a-42a5-8384-357308205e6f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_bf9da095-0911-412e-8044-aa76c7bc256c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_86c5c5fe-3434-4187-8f81-9e8add96e22d" xlink:to="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_bf9da095-0911-412e-8044-aa76c7bc256c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefit_82cab272-d5a7-4714-9016-b03944fe0814" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_4d8815ce-d5e6-4aef-a904-dc598358c874" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefit_82cab272-d5a7-4714-9016-b03944fe0814" xlink:to="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_4d8815ce-d5e6-4aef-a904-dc598358c874" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentFederalTaxExpenseBenefit_19755669-9868-4871-8562-51330d20147b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CurrentFederalTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefit_82cab272-d5a7-4714-9016-b03944fe0814" xlink:to="loc_us-gaap_CurrentFederalTaxExpenseBenefit_19755669-9868-4871-8562-51330d20147b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_b41c12ed-fb55-406e-96f5-c9ba3caafbdd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefit_b988c11c-2db3-4259-a642-51e3b0435f44" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_b41c12ed-fb55-406e-96f5-c9ba3caafbdd" xlink:to="loc_us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefit_b988c11c-2db3-4259-a642-51e3b0435f44" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_fca5cd45-5792-4ce3-8b22-7546a9c71720" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_b41c12ed-fb55-406e-96f5-c9ba3caafbdd" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_fca5cd45-5792-4ce3-8b22-7546a9c71720" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://graniteridgeresources.com/role/IncomeTaxesScheduleofReconciliationIncomeTaxExpenseDetails" xlink:type="simple" xlink:href="grnt-20251231.xsd#IncomeTaxesScheduleofReconciliationIncomeTaxExpenseDetails"/>
  <link:calculationLink xlink:role="http://graniteridgeresources.com/role/IncomeTaxesScheduleofReconciliationIncomeTaxExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_241ca2d5-823a-4f16-8488-181e2c04200b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_fe5a06f7-029b-4560-a5b6-7bb067b1c3e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_241ca2d5-823a-4f16-8488-181e2c04200b" xlink:to="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_fe5a06f7-029b-4560-a5b6-7bb067b1c3e5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_3b627946-813d-4e0a-af1d-cc88659be865" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_241ca2d5-823a-4f16-8488-181e2c04200b" xlink:to="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_3b627946-813d-4e0a-af1d-cc88659be865" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpense_a117b51b-572e-4b26-bc64-42b0fe1ed08d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_241ca2d5-823a-4f16-8488-181e2c04200b" xlink:to="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpense_a117b51b-572e-4b26-bc64-42b0fe1ed08d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes_019c7f34-ddeb-7ffd-a78d-d3be5e67b83a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_241ca2d5-823a-4f16-8488-181e2c04200b" xlink:to="loc_us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes_019c7f34-ddeb-7ffd-a78d-d3be5e67b83a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c7f34-bcd3-7734-92fb-3a7c8ae4cd0e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_019c7f34-bcd3-71eb-95eb-8658ab7ca12e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c7f34-bcd3-7734-92fb-3a7c8ae4cd0e" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_019c7f34-bcd3-71eb-95eb-8658ab7ca12e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_019c7f34-bcd3-7755-9e21-dae0af5b4200" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c7f34-bcd3-7734-92fb-3a7c8ae4cd0e" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_019c7f34-bcd3-7755-9e21-dae0af5b4200" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense_019c7f34-bcd3-7c0b-91c4-e50130fdbdd9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c7f34-bcd3-7734-92fb-3a7c8ae4cd0e" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense_019c7f34-bcd3-7c0b-91c4-e50130fdbdd9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes_019c7f34-bcd3-71f7-b55e-11090deaa165" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c7f34-bcd3-7734-92fb-3a7c8ae4cd0e" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes_019c7f34-bcd3-71f7-b55e-11090deaa165" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://graniteridgeresources.com/role/IncomeTaxesScheduleofSignificantComponentsofDeferredTaxAssetsandLiabilitiesDetails" xlink:type="simple" xlink:href="grnt-20251231.xsd#IncomeTaxesScheduleofSignificantComponentsofDeferredTaxAssetsandLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://graniteridgeresources.com/role/IncomeTaxesScheduleofSignificantComponentsofDeferredTaxAssetsandLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_de28c899-8d03-4dd4-8040-fa8c65ca665f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_4c8f4a6e-0bed-44bf-969b-cfd6419daf6d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_de28c899-8d03-4dd4-8040-fa8c65ca665f" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_4c8f4a6e-0bed-44bf-969b-cfd6419daf6d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesDerivatives_eb8dc754-4e92-4445-9900-93fcc7070dec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxLiabilitiesDerivatives"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_de28c899-8d03-4dd4-8040-fa8c65ca665f" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesDerivatives_eb8dc754-4e92-4445-9900-93fcc7070dec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_dabb20dd-417c-437f-b63b-69fa3f1454c8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_ea0a6f0e-5e00-43cb-8d5d-6a0880f54006" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_dabb20dd-417c-437f-b63b-69fa3f1454c8" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_ea0a6f0e-5e00-43cb-8d5d-6a0880f54006" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsGross_60a126d0-f929-4668-a147-29ac448a784d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_dabb20dd-417c-437f-b63b-69fa3f1454c8" xlink:to="loc_us-gaap_DeferredTaxAssetsGross_60a126d0-f929-4668-a147-29ac448a784d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_78ec9a4f-4c8e-44fe-972b-0db910de4c50" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_051f29fb-2e47-4fc1-a497-9f75deeee472" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsNet"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_78ec9a4f-4c8e-44fe-972b-0db910de4c50" xlink:to="loc_us-gaap_DeferredTaxAssetsNet_051f29fb-2e47-4fc1-a497-9f75deeee472" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_bd8a2ee4-2c8d-4647-ae1c-ae45dd0c9f6e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxLiabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_78ec9a4f-4c8e-44fe-972b-0db910de4c50" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilities_bd8a2ee4-2c8d-4647-ae1c-ae45dd0c9f6e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsGross_18941b13-5563-4c96-ba22-8d03d5fea70e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsGross"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetInterestCarryforward_6f7f53da-98ef-4409-b190-20a0ae3ef597" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetInterestCarryforward"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_18941b13-5563-4c96-ba22-8d03d5fea70e" xlink:to="loc_us-gaap_DeferredTaxAssetInterestCarryforward_6f7f53da-98ef-4409-b190-20a0ae3ef597" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations_b862f0e1-0b30-45b2-90cf-ad1af4b99506" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_18941b13-5563-4c96-ba22-8d03d5fea70e" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations_b862f0e1-0b30-45b2-90cf-ad1af4b99506" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_11d50ea2-db67-4613-a136-3c2a038355bf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_18941b13-5563-4c96-ba22-8d03d5fea70e" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_11d50ea2-db67-4613-a136-3c2a038355bf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseOther_70243854-c655-4b72-9a4e-428ec6785872" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseOther"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_18941b13-5563-4c96-ba22-8d03d5fea70e" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseOther_70243854-c655-4b72-9a4e-428ec6785872" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsInvestments_5a127cfe-28ec-4d01-91b3-048b1f4a11e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsInvestments"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_18941b13-5563-4c96-ba22-8d03d5fea70e" xlink:to="loc_us-gaap_DeferredTaxAssetsInvestments_5a127cfe-28ec-4d01-91b3-048b1f4a11e5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsDerivativeInstruments_1e31f930-20ca-480a-9ed6-ecd776e410fd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsDerivativeInstruments"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_18941b13-5563-4c96-ba22-8d03d5fea70e" xlink:to="loc_us-gaap_DeferredTaxAssetsDerivativeInstruments_1e31f930-20ca-480a-9ed6-ecd776e410fd" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://graniteridgeresources.com/role/IncomeTaxesScheduleofIncomeTaxesPaidNetofRefundsDetails" xlink:type="simple" xlink:href="grnt-20251231.xsd#IncomeTaxesScheduleofIncomeTaxesPaidNetofRefundsDetails"/>
  <link:calculationLink xlink:role="http://graniteridgeresources.com/role/IncomeTaxesScheduleofIncomeTaxesPaidNetofRefundsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesPaidNet_019c7f39-5beb-7cfa-a90d-3ba9d7b3563c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxesPaidNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxPaidStateAndLocalAfterRefundReceived_019c7f39-5beb-7df4-be88-8896ac7efcdc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxPaidStateAndLocalAfterRefundReceived"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxesPaidNet_019c7f39-5beb-7cfa-a90d-3ba9d7b3563c" xlink:to="loc_us-gaap_IncomeTaxPaidStateAndLocalAfterRefundReceived_019c7f39-5beb-7df4-be88-8896ac7efcdc" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://graniteridgeresources.com/role/DebtScheduleofLongTermDebtDetails" xlink:type="simple" xlink:href="grnt-20251231.xsd#DebtScheduleofLongTermDebtDetails"/>
  <link:calculationLink xlink:role="http://graniteridgeresources.com/role/DebtScheduleofLongTermDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019ca019-2ab5-7fe4-894a-b5bd4e37017e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_019ca019-2ab5-7928-a7b3-b2a3871a38d5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_019ca019-2ab5-7fe4-894a-b5bd4e37017e" xlink:to="loc_us-gaap_LongTermDebtCurrent_019ca019-2ab5-7928-a7b3-b2a3871a38d5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_019ca019-2ab5-7f9b-bab9-c4ee2b4c3de9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_019ca019-2ab5-7fe4-894a-b5bd4e37017e" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_019ca019-2ab5-7f9b-bab9-c4ee2b4c3de9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019ca018-ca52-745f-8555-864aef1b4760" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_019ca018-ca52-7767-b072-056cf625611f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019ca018-ca52-745f-8555-864aef1b4760" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_019ca018-ca52-7767-b072-056cf625611f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_019ca018-ca52-7ab6-ae0b-1d0735ce2654" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentUnamortizedDiscount"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019ca018-ca52-745f-8555-864aef1b4760" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_019ca018-ca52-7ab6-ae0b-1d0735ce2654" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_019ca018-ca52-7f7f-855c-3813dbaefa94" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019ca018-ca52-745f-8555-864aef1b4760" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_019ca018-ca52-7f7f-855c-3813dbaefa94" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://graniteridgeresources.com/role/StockIncentivePlanScheduleofFutureStockBasedCompensationExpenseDetails" xlink:type="simple" xlink:href="grnt-20251231.xsd#StockIncentivePlanScheduleofFutureStockBasedCompensationExpenseDetails"/>
  <link:calculationLink xlink:role="http://graniteridgeresources.com/role/StockIncentivePlanScheduleofFutureStockBasedCompensationExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInFuture_f56d1c35-c157-4842-8917-fa81ed248391" xlink:href="grnt-20251231.xsd#grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInFuture"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInNextTwelveMonths_1f419ec3-490e-462e-8bf5-906a9d08c6f5" xlink:href="grnt-20251231.xsd#grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInNextTwelveMonths"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInFuture_f56d1c35-c157-4842-8917-fa81ed248391" xlink:to="loc_grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInNextTwelveMonths_1f419ec3-490e-462e-8bf5-906a9d08c6f5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInYearTwo_8815180a-cec4-45ca-a7c1-8bc586e84340" xlink:href="grnt-20251231.xsd#grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInYearTwo"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInFuture_f56d1c35-c157-4842-8917-fa81ed248391" xlink:to="loc_grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInYearTwo_8815180a-cec4-45ca-a7c1-8bc586e84340" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInYearThree_c781135f-bce9-4ec3-8a1d-6c8a68a6f7bd" xlink:href="grnt-20251231.xsd#grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInYearThree"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInFuture_f56d1c35-c157-4842-8917-fa81ed248391" xlink:to="loc_grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInYearThree_c781135f-bce9-4ec3-8a1d-6c8a68a6f7bd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInYearFour_019cbada-23cd-768a-9ba1-2b8da4beadda" xlink:href="grnt-20251231.xsd#grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInYearFour"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInFuture_f56d1c35-c157-4842-8917-fa81ed248391" xlink:to="loc_grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInYearFour_019cbada-23cd-768a-9ba1-2b8da4beadda" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInYearFive_019cbada-23cd-7906-91bb-8cce394d3b8a" xlink:href="grnt-20251231.xsd#grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInYearFive"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInFuture_f56d1c35-c157-4842-8917-fa81ed248391" xlink:to="loc_grnt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardCompensationExpenseExpectedInYearFive_019cbada-23cd-7906-91bb-8cce394d3b8a" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://graniteridgeresources.com/role/EarningsPerShareScheduleofBasicandDilutedEarningsPerShareDetails" xlink:type="simple" xlink:href="grnt-20251231.xsd#EarningsPerShareScheduleofBasicandDilutedEarningsPerShareDetails"/>
  <link:calculationLink xlink:role="http://graniteridgeresources.com/role/EarningsPerShareScheduleofBasicandDilutedEarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_4acb5345-85d2-45d3-b45d-ba86d4e50854" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_990ecae8-0998-4f3b-9ebd-48339edf39c3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_4acb5345-85d2-45d3-b45d-ba86d4e50854" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_990ecae8-0998-4f3b-9ebd-48339edf39c3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_0b6a2697-434a-4395-83d0-0e7e9c895328" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_4acb5345-85d2-45d3-b45d-ba86d4e50854" xlink:to="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_0b6a2697-434a-4395-83d0-0e7e9c895328" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_8c0b466e-33ce-4054-b3af-d398fec8e314" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted_7509ab2c-2cec-4d76-b85f-a0a0092a1690" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_8c0b466e-33ce-4054-b3af-d398fec8e314" xlink:to="loc_us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted_7509ab2c-2cec-4d76-b85f-a0a0092a1690" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersBasic_9c2602f0-7bdf-419f-bc27-657c37d0978f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersBasic"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_8c0b466e-33ce-4054-b3af-d398fec8e314" xlink:to="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersBasic_9c2602f0-7bdf-419f-bc27-657c37d0978f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersBasic_1a0dbe19-7b10-4bb6-a671-b30cb2617df5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersBasic"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic_e50d15db-87f8-4b35-91bc-dc3b7009cbd7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersBasic_1a0dbe19-7b10-4bb6-a671-b30cb2617df5" xlink:to="loc_us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic_e50d15db-87f8-4b35-91bc-dc3b7009cbd7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_70321037-45e5-45aa-9126-210aaa4a42be" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersBasic_1a0dbe19-7b10-4bb6-a671-b30cb2617df5" xlink:to="loc_us-gaap_NetIncomeLoss_70321037-45e5-45aa-9126-210aaa4a42be" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://graniteridgeresources.com/role/AccountsPayableandAccruedLiabilitiesDetails" xlink:type="simple" xlink:href="grnt-20251231.xsd#AccountsPayableandAccruedLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://graniteridgeresources.com/role/AccountsPayableandAccruedLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_6e12fab5-f640-403d-9be8-742a45b0e7de" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_61da9aeb-0f75-4aa8-a111-00ecae974545" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_6e12fab5-f640-403d-9be8-742a45b0e7de" xlink:to="loc_us-gaap_AccountsPayableCurrent_61da9aeb-0f75-4aa8-a111-00ecae974545" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_ab61bd10-31f5-4aac-902a-12d7e8be094f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_6e12fab5-f640-403d-9be8-742a45b0e7de" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_ab61bd10-31f5-4aac-902a-12d7e8be094f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_AccruedProductionCosts_b9d1d90f-e123-4c75-89df-30fd52072807" xlink:href="grnt-20251231.xsd#grnt_AccruedProductionCosts"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_6e12fab5-f640-403d-9be8-742a45b0e7de" xlink:to="loc_grnt_AccruedProductionCosts_b9d1d90f-e123-4c75-89df-30fd52072807" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_grnt_AccruedCapitalExpendituresCurrent_eea6ac32-3145-4f7c-9482-b31547802470" xlink:href="grnt-20251231.xsd#grnt_AccruedCapitalExpendituresCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_6e12fab5-f640-403d-9be8-742a45b0e7de" xlink:to="loc_grnt_AccruedCapitalExpendituresCurrent_eea6ac32-3145-4f7c-9482-b31547802470" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
