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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2023 Workiva-->
<!--r:c5554fc9-877a-417c-ba1e-d85c98ff0a37,g:f756d813-5532-4081-8c62-3c28568a5306-->
<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://momentus.space/role/CONDENSEDCONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="mnts-20230930.xsd#CONDENSEDCONSOLIDATEDBALANCESHEETS"/>
  <link:calculationLink xlink:role="http://momentus.space/role/CONDENSEDCONSOLIDATEDBALANCESHEETS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_3b3a9b1f-4750-41f9-8b56-b684bc40b0e9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansPayableCurrent_d8f18cd0-2b81-4eeb-96d4-336f334a2f09" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LoansPayableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_3b3a9b1f-4750-41f9-8b56-b684bc40b0e9" xlink:to="loc_us-gaap_LoansPayableCurrent_d8f18cd0-2b81-4eeb-96d4-336f334a2f09" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationReserveCurrent_a0c3dd7d-bb33-4e3c-9998-d05621653f4a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LitigationReserveCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_3b3a9b1f-4750-41f9-8b56-b684bc40b0e9" xlink:to="loc_us-gaap_LitigationReserveCurrent_a0c3dd7d-bb33-4e3c-9998-d05621653f4a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_e6e23f63-3a7e-47cf-9563-f63c4cc3ce00" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_3b3a9b1f-4750-41f9-8b56-b684bc40b0e9" xlink:to="loc_us-gaap_AccountsPayableCurrent_e6e23f63-3a7e-47cf-9563-f63c4cc3ce00" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mnts_ShareRepurchaseLiabilityCurrent_327225f5-f802-4ac0-a872-5fabe91b26f1" xlink:href="mnts-20230930.xsd#mnts_ShareRepurchaseLiabilityCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_3b3a9b1f-4750-41f9-8b56-b684bc40b0e9" xlink:to="loc_mnts_ShareRepurchaseLiabilityCurrent_327225f5-f802-4ac0-a872-5fabe91b26f1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_994e79f8-4964-45d6-88a2-029cf3bf7b08" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_3b3a9b1f-4750-41f9-8b56-b684bc40b0e9" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_994e79f8-4964-45d6-88a2-029cf3bf7b08" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_27594991-c57c-41ea-b6a6-10cfa67e0ac1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_3b3a9b1f-4750-41f9-8b56-b684bc40b0e9" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_27594991-c57c-41ea-b6a6-10cfa67e0ac1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_d6474410-2e55-49b8-8490-5e5da117db02" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_3b3a9b1f-4750-41f9-8b56-b684bc40b0e9" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_d6474410-2e55-49b8-8490-5e5da117db02" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_ddd511a2-288c-48d0-a393-6913a65bf34e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_3b3a9b1f-4750-41f9-8b56-b684bc40b0e9" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_ddd511a2-288c-48d0-a393-6913a65bf34e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_32c8f378-2473-4a8a-a7eb-7d9741201edc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesNoncurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_10a8e024-d042-4612-83fc-d46d7aa283c1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_32c8f378-2473-4a8a-a7eb-7d9741201edc" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_10a8e024-d042-4612-83fc-d46d7aa283c1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_b1090243-82cf-4986-bcd7-8de7fe17a64e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_32c8f378-2473-4a8a-a7eb-7d9741201edc" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_b1090243-82cf-4986-bcd7-8de7fe17a64e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermLoansPayable_815faaa2-71d4-495b-9bf5-8dcb3cbe3640" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermLoansPayable"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_32c8f378-2473-4a8a-a7eb-7d9741201edc" xlink:to="loc_us-gaap_LongTermLoansPayable_815faaa2-71d4-495b-9bf5-8dcb3cbe3640" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_d0172a55-7dcd-430e-9e39-2a0c4133d02f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_32c8f378-2473-4a8a-a7eb-7d9741201edc" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_d0172a55-7dcd-430e-9e39-2a0c4133d02f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mnts_WarrantLiabilityNoncurrent_271be0a5-aa77-4dde-aa27-7f9dd6d301fa" xlink:href="mnts-20230930.xsd#mnts_WarrantLiabilityNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_32c8f378-2473-4a8a-a7eb-7d9741201edc" xlink:to="loc_mnts_WarrantLiabilityNoncurrent_271be0a5-aa77-4dde-aa27-7f9dd6d301fa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_f84481e4-2639-481e-942b-49a17c644fde" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_f963cc1b-feaa-4bbc-a8d5-0697473ef968" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_f84481e4-2639-481e-942b-49a17c644fde" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_f963cc1b-feaa-4bbc-a8d5-0697473ef968" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_7993bf37-4456-4f1e-8f83-f9f2a1579aaf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_f84481e4-2639-481e-942b-49a17c644fde" xlink:to="loc_us-gaap_AdditionalPaidInCapital_7993bf37-4456-4f1e-8f83-f9f2a1579aaf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_4024b570-7e0c-47e1-8b4a-0a951eef53f7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_f84481e4-2639-481e-942b-49a17c644fde" xlink:to="loc_us-gaap_CommonStockValue_4024b570-7e0c-47e1-8b4a-0a951eef53f7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_f5516d1e-1138-4f93-bab4-1911ac3d725f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_8a734a18-abb2-4e3f-8387-bde4b2a1d4b3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_f5516d1e-1138-4f93-bab4-1911ac3d725f" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_8a734a18-abb2-4e3f-8387-bde4b2a1d4b3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_6e89f5d1-b5ae-4054-a196-943d2502f03e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_f5516d1e-1138-4f93-bab4-1911ac3d725f" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_6e89f5d1-b5ae-4054-a196-943d2502f03e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCosts_fe4cffba-5de5-4596-a3d0-71422b4e1bc2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredCosts"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_f5516d1e-1138-4f93-bab4-1911ac3d725f" xlink:to="loc_us-gaap_DeferredCosts_fe4cffba-5de5-4596-a3d0-71422b4e1bc2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_ad2ed6ec-f01b-43ce-8a44-c1c398531e7f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_f5516d1e-1138-4f93-bab4-1911ac3d725f" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_ad2ed6ec-f01b-43ce-8a44-c1c398531e7f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_70265c02-56e3-48b0-b7ea-7e459dd193e6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_f5516d1e-1138-4f93-bab4-1911ac3d725f" xlink:to="loc_us-gaap_AssetsCurrent_70265c02-56e3-48b0-b7ea-7e459dd193e6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_6b69af03-754a-4f90-afd4-7a4f56993af2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_f5516d1e-1138-4f93-bab4-1911ac3d725f" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_6b69af03-754a-4f90-afd4-7a4f56993af2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashNoncurrent_daef6054-72e2-48f0-8c3f-bf22fc28a8a8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedCashNoncurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_f5516d1e-1138-4f93-bab4-1911ac3d725f" xlink:to="loc_us-gaap_RestrictedCashNoncurrent_daef6054-72e2-48f0-8c3f-bf22fc28a8a8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_d244b89d-50ef-41c3-8c47-1d07a4c377b3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_16c3ff0e-b230-454a-99f3-1b53a47ba438" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_d244b89d-50ef-41c3-8c47-1d07a4c377b3" xlink:to="loc_us-gaap_StockholdersEquity_16c3ff0e-b230-454a-99f3-1b53a47ba438" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_df3b09b8-0ac6-4859-8092-631ed330b020" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_d244b89d-50ef-41c3-8c47-1d07a4c377b3" xlink:to="loc_us-gaap_Liabilities_df3b09b8-0ac6-4859-8092-631ed330b020" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_cad900d4-6116-41df-a319-f69de6a4335b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_d244b89d-50ef-41c3-8c47-1d07a4c377b3" xlink:to="loc_us-gaap_CommitmentsAndContingencies_cad900d4-6116-41df-a319-f69de6a4335b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_1399ddbd-7c49-40b1-a59c-d376134daf7b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_ce52a501-97b7-46b3-a5d4-2667f5da2c79" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_1399ddbd-7c49-40b1-a59c-d376134daf7b" xlink:to="loc_us-gaap_LiabilitiesNoncurrent_ce52a501-97b7-46b3-a5d4-2667f5da2c79" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_b3631da8-6c1f-4c56-8d45-1213addd3f7b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_1399ddbd-7c49-40b1-a59c-d376134daf7b" xlink:to="loc_us-gaap_LiabilitiesCurrent_b3631da8-6c1f-4c56-8d45-1213addd3f7b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_be1a2704-14e8-4469-98bb-e87d77b9bfa5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_6eeef467-a9fd-4e83-9b8f-40991a8465e6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_be1a2704-14e8-4469-98bb-e87d77b9bfa5" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_6eeef467-a9fd-4e83-9b8f-40991a8465e6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_6de2ad67-621d-42e9-bf47-3d991b999ced" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_be1a2704-14e8-4469-98bb-e87d77b9bfa5" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_6de2ad67-621d-42e9-bf47-3d991b999ced" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashCurrent_e59233f2-fd91-4238-9435-39a96025d801" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedCashCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_be1a2704-14e8-4469-98bb-e87d77b9bfa5" xlink:to="loc_us-gaap_RestrictedCashCurrent_e59233f2-fd91-4238-9435-39a96025d801" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InsuranceSettlementsReceivableCurrent_dfac7d7a-4ea5-4f7d-95b2-8e36ab68fad5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InsuranceSettlementsReceivableCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_be1a2704-14e8-4469-98bb-e87d77b9bfa5" xlink:to="loc_us-gaap_InsuranceSettlementsReceivableCurrent_dfac7d7a-4ea5-4f7d-95b2-8e36ab68fad5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_31832642-881c-4c74-b21a-7a271f9ad0f2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_be1a2704-14e8-4469-98bb-e87d77b9bfa5" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_31832642-881c-4c74-b21a-7a271f9ad0f2" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://momentus.space/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="simple" xlink:href="mnts-20230930.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS"/>
  <link:calculationLink xlink:role="http://momentus.space/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_1eccd9b1-b798-48ad-a49a-5c61a75c84d8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_6dfafcff-a3c0-44b9-8b46-21bd595abf50" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_1eccd9b1-b798-48ad-a49a-5c61a75c84d8" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_6dfafcff-a3c0-44b9-8b46-21bd595abf50" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_067ede2a-18f9-4d75-be56-0a28ae7fbeef" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_1eccd9b1-b798-48ad-a49a-5c61a75c84d8" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_067ede2a-18f9-4d75-be56-0a28ae7fbeef" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_fed139c7-9d95-4191-a9a3-9cc9957b7ac3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_dfef2d71-4b4b-4f21-a5a1-fd50224bbd0b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingExpenses"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_fed139c7-9d95-4191-a9a3-9cc9957b7ac3" xlink:to="loc_us-gaap_OperatingExpenses_dfef2d71-4b4b-4f21-a5a1-fd50224bbd0b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_e24470a8-052a-45f0-8c8e-7ed684c6c7fb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GrossProfit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_fed139c7-9d95-4191-a9a3-9cc9957b7ac3" xlink:to="loc_us-gaap_GrossProfit_e24470a8-052a-45f0-8c8e-7ed684c6c7fb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_6d25f66e-ca94-4f54-be9a-7614aa26eedd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_7860cd18-c727-46b8-980e-84a514d1e94f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_6d25f66e-ca94-4f54-be9a-7614aa26eedd" xlink:to="loc_us-gaap_OperatingIncomeLoss_7860cd18-c727-46b8-980e-84a514d1e94f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_d44a973d-fa44-4c01-b9c9-b9f9172a3ea1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_6d25f66e-ca94-4f54-be9a-7614aa26eedd" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_d44a973d-fa44-4c01-b9c9-b9f9172a3ea1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_4e0abc59-c1dc-4bd2-b636-1d2ce9d7d22a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_5213b77a-43e9-4977-916a-10f5031db918" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestExpense"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_4e0abc59-c1dc-4bd2-b636-1d2ce9d7d22a" xlink:to="loc_us-gaap_InterestExpense_5213b77a-43e9-4977-916a-10f5031db918" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInterest_3a75bfd1-b48f-4022-9458-5fe2e4966b11" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentIncomeInterest"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_4e0abc59-c1dc-4bd2-b636-1d2ce9d7d22a" xlink:to="loc_us-gaap_InvestmentIncomeInterest_3a75bfd1-b48f-4022-9458-5fe2e4966b11" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAdjustmentOfWarrants_5b1ff9f6-5a3f-43d2-b772-4db2909bb5dd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAdjustmentOfWarrants"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_4e0abc59-c1dc-4bd2-b636-1d2ce9d7d22a" xlink:to="loc_us-gaap_FairValueAdjustmentOfWarrants_5b1ff9f6-5a3f-43d2-b772-4db2909bb5dd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_f2290e17-603b-4a8b-80de-2105c9562762" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_4e0abc59-c1dc-4bd2-b636-1d2ce9d7d22a" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_f2290e17-603b-4a8b-80de-2105c9562762" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_8f48bac1-6033-4128-9800-6b8426374c49" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainLossOnDispositionOfAssets1"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_4e0abc59-c1dc-4bd2-b636-1d2ce9d7d22a" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets1_8f48bac1-6033-4128-9800-6b8426374c49" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_172c8526-61a5-49b2-a16a-872d0bb65132" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GrossProfit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_c6f3410c-69e5-426c-9cfd-0db198264819" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_GrossProfit_172c8526-61a5-49b2-a16a-872d0bb65132" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_c6f3410c-69e5-426c-9cfd-0db198264819" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_54c8dae0-31da-4296-9b94-d5e4d07c4d70" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_172c8526-61a5-49b2-a16a-872d0bb65132" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_54c8dae0-31da-4296-9b94-d5e4d07c4d70" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://momentus.space/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="simple" xlink:href="mnts-20230930.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS"/>
  <link:calculationLink xlink:role="http://momentus.space/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_a717bbee-5ca9-44c9-a767-895933b249e7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireIntangibleAssets_24f367a4-cca2-49dc-b86b-0b7d48a6aa4c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsToAcquireIntangibleAssets"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_a717bbee-5ca9-44c9-a767-895933b249e7" xlink:to="loc_us-gaap_PaymentsToAcquireIntangibleAssets_24f367a4-cca2-49dc-b86b-0b7d48a6aa4c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_33bc6962-d3d7-40ca-a16d-f6e72236a1d0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_a717bbee-5ca9-44c9-a767-895933b249e7" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_33bc6962-d3d7-40ca-a16d-f6e72236a1d0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_7ccd0d32-fe6a-4e3e-b52f-37fe7259c99f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_a717bbee-5ca9-44c9-a767-895933b249e7" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_7ccd0d32-fe6a-4e3e-b52f-37fe7259c99f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_61e449c6-e38e-4598-bc37-05129198394e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_27001c10-c296-461f-8e62-c1518ced9947" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_61e449c6-e38e-4598-bc37-05129198394e" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_27001c10-c296-461f-8e62-c1518ced9947" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfStockIssuanceCosts_b908ebee-91e7-4986-81b0-911b66fab4cd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsOfStockIssuanceCosts"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_61e449c6-e38e-4598-bc37-05129198394e" xlink:to="loc_us-gaap_PaymentsOfStockIssuanceCosts_b908ebee-91e7-4986-81b0-911b66fab4cd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_2a10933b-c1ba-43c2-b81e-35270be5cd7c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromStockOptionsExercised"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_61e449c6-e38e-4598-bc37-05129198394e" xlink:to="loc_us-gaap_ProceedsFromStockOptionsExercised_2a10933b-c1ba-43c2-b81e-35270be5cd7c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_39902dd7-336c-46b2-9012-86c70b605f56" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_61e449c6-e38e-4598-bc37-05129198394e" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_39902dd7-336c-46b2-9012-86c70b605f56" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfNotesPayable_f0473d78-a06c-4215-a787-df1490804337" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RepaymentsOfNotesPayable"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_61e449c6-e38e-4598-bc37-05129198394e" xlink:to="loc_us-gaap_RepaymentsOfNotesPayable_f0473d78-a06c-4215-a787-df1490804337" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRepaymentOfLoansByEmployeeStockOwnershipPlans_1e3a8b46-95cf-4c54-86f8-0a7c727c4d38" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromRepaymentOfLoansByEmployeeStockOwnershipPlans"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_61e449c6-e38e-4598-bc37-05129198394e" xlink:to="loc_us-gaap_ProceedsFromRepaymentOfLoansByEmployeeStockOwnershipPlans_1e3a8b46-95cf-4c54-86f8-0a7c727c4d38" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mnts_PaymentOfDeferredOfferingCosts_06be557d-680a-4452-a591-d8ed29bbea0f" xlink:href="mnts-20230930.xsd#mnts_PaymentOfDeferredOfferingCosts"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_61e449c6-e38e-4598-bc37-05129198394e" xlink:to="loc_mnts_PaymentOfDeferredOfferingCosts_06be557d-680a-4452-a591-d8ed29bbea0f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_3667ce47-efd4-40fa-a6c4-98340e5f74b9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_61e449c6-e38e-4598-bc37-05129198394e" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_3667ce47-efd4-40fa-a6c4-98340e5f74b9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_52a1147c-ad31-4d27-a525-b904bbd399f9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInOperatingLeaseLiability"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_52a1147c-ad31-4d27-a525-b904bbd399f9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_41f0e650-6f62-4516-a598-f9bab750c170" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_41f0e650-6f62-4516-a598-f9bab750c170" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_9774ee3b-7152-4ee5-8c0b-29e33cb1526a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentAssets"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_9774ee3b-7152-4ee5-8c0b-29e33cb1526a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_31a90729-424e-4776-94c5-08b25f188ebd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_us-gaap_NetIncomeLoss_31a90729-424e-4776-94c5-08b25f188ebd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDepreciationAndAmortization_6d2f786a-3110-47eb-bd29-68fd604e0ffb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherDepreciationAndAmortization"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_us-gaap_OtherDepreciationAndAmortization_6d2f786a-3110-47eb-bd29-68fd604e0ffb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_87cb5ad0-90be-451b-a4ee-da3d12e50721" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_87cb5ad0-90be-451b-a4ee-da3d12e50721" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_5d8dd976-513a-4109-bb5f-d6c2f826b168" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AmortizationOfFinancingCostsAndDiscounts"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_5d8dd976-513a-4109-bb5f-d6c2f826b168" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherCurrentLiabilities_d5f4b658-9e6c-4754-8d99-5878220b4988" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInOtherCurrentLiabilities"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherCurrentLiabilities_d5f4b658-9e6c-4754-8d99-5878220b4988" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_c563f5b4-28d1-4751-8de3-8fcd09a2a440" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_c563f5b4-28d1-4751-8de3-8fcd09a2a440" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_48685d62-76bc-4900-a032-f46b767d414e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_48685d62-76bc-4900-a032-f46b767d414e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_4d123c9a-b31a-4348-be74-3ab454c18f7a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_4d123c9a-b31a-4348-be74-3ab454c18f7a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAdjustmentOfWarrants_ee6c1bdc-ac15-4c3e-9a11-1848b0ab4bff" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAdjustmentOfWarrants"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_us-gaap_FairValueAdjustmentOfWarrants_ee6c1bdc-ac15-4c3e-9a11-1848b0ab4bff" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mnts_IssuanceOfCommonStockNonEmployee_fc75774b-3f4a-4895-a122-d838e37568c6" xlink:href="mnts-20230930.xsd#mnts_IssuanceOfCommonStockNonEmployee"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_mnts_IssuanceOfCommonStockNonEmployee_fc75774b-3f4a-4895-a122-d838e37568c6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_ad6f31d0-acd7-4246-b734-14a4bc1fe796" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <link:calculationArc order="14" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_ad6f31d0-acd7-4246-b734-14a4bc1fe796" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_57f55944-81cc-4bd4-940c-7e0a329dccdf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_57f55944-81cc-4bd4-940c-7e0a329dccdf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_83e0ac96-d2ab-4820-8ad0-4c91e2fd79eb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="16" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_us-gaap_ShareBasedCompensation_83e0ac96-d2ab-4820-8ad0-4c91e2fd79eb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInterestPayableNet_be653468-7adf-4109-8d0f-b97dc52c742a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInInterestPayableNet"/>
    <link:calculationArc order="17" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_us-gaap_IncreaseDecreaseInInterestPayableNet_be653468-7adf-4109-8d0f-b97dc52c742a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_2b3ad0aa-d676-413f-a326-349a9dbfb61d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability"/>
    <link:calculationArc order="18" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3d037fd9-4f50-4bf0-9f32-9a0a2d3c7a5a" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_2b3ad0aa-d676-413f-a326-349a9dbfb61d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_04ccb4d3-147c-4589-aa10-77c0d8ebbc14" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_db63d2e3-f6de-4c8f-bf65-72629e632e8a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_04ccb4d3-147c-4589-aa10-77c0d8ebbc14" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_db63d2e3-f6de-4c8f-bf65-72629e632e8a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_1bb7a67a-d9e3-4dfd-9245-30a6ce18b7bf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_04ccb4d3-147c-4589-aa10-77c0d8ebbc14" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_1bb7a67a-d9e3-4dfd-9245-30a6ce18b7bf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_22dd1383-eb60-4811-8e45-b91acc68125a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_04ccb4d3-147c-4589-aa10-77c0d8ebbc14" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_22dd1383-eb60-4811-8e45-b91acc68125a" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://momentus.space/role/PrepaidsandOtherCurrentAssetsDetails" xlink:type="simple" xlink:href="mnts-20230930.xsd#PrepaidsandOtherCurrentAssetsDetails"/>
  <link:calculationLink xlink:role="http://momentus.space/role/PrepaidsandOtherCurrentAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_aab0124c-1255-4d77-b8ff-7132539ec735" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_mnts_PrepaidLaunchCostsCurrent_81101c0f-86e2-4a81-b6af-4de9d75e9dc9" xlink:href="mnts-20230930.xsd#mnts_PrepaidLaunchCostsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_aab0124c-1255-4d77-b8ff-7132539ec735" xlink:to="loc_mnts_PrepaidLaunchCostsCurrent_81101c0f-86e2-4a81-b6af-4de9d75e9dc9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mnts_PrepaidInsuranceAndOtherAssetsCurrent_73bd7f10-c754-4f80-82a9-327199adf82f" xlink:href="mnts-20230930.xsd#mnts_PrepaidInsuranceAndOtherAssetsCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_aab0124c-1255-4d77-b8ff-7132539ec735" xlink:to="loc_mnts_PrepaidInsuranceAndOtherAssetsCurrent_73bd7f10-c754-4f80-82a9-327199adf82f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mnts_PrepaidResearchAndDevelopmentExpenseCurrent_995e385f-0d9f-4607-beb8-7f0c72972a21" xlink:href="mnts-20230930.xsd#mnts_PrepaidResearchAndDevelopmentExpenseCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_aab0124c-1255-4d77-b8ff-7132539ec735" xlink:to="loc_mnts_PrepaidResearchAndDevelopmentExpenseCurrent_995e385f-0d9f-4607-beb8-7f0c72972a21" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://momentus.space/role/PropertyMachineryandEquipmentnetDetails" xlink:type="simple" xlink:href="mnts-20230930.xsd#PropertyMachineryandEquipmentnetDetails"/>
  <link:calculationLink xlink:role="http://momentus.space/role/PropertyMachineryandEquipmentnetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_a852c2f0-2aec-4559-a954-4b4cf662b002" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_5131d2c3-ff27-4314-8d92-5e3df9cbdaff" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_a852c2f0-2aec-4559-a954-4b4cf662b002" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_5131d2c3-ff27-4314-8d92-5e3df9cbdaff" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_fbb9c031-4164-4bcc-9202-6e1509e7119d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_a852c2f0-2aec-4559-a954-4b4cf662b002" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_fbb9c031-4164-4bcc-9202-6e1509e7119d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://momentus.space/role/IntangibleAssetsnetScheduleofIntangibleAssetsNetDetails" xlink:type="simple" xlink:href="mnts-20230930.xsd#IntangibleAssetsnetScheduleofIntangibleAssetsNetDetails"/>
  <link:calculationLink xlink:role="http://momentus.space/role/IntangibleAssetsnetScheduleofIntangibleAssetsNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_8df130d0-6057-4141-bc01-2447b117adf6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_90ba45a5-5988-4a09-9bad-114eace75a98" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_8df130d0-6057-4141-bc01-2447b117adf6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_90ba45a5-5988-4a09-9bad-114eace75a98" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_3e9890f2-8f9b-4885-9007-63337d2daaa8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_8df130d0-6057-4141-bc01-2447b117adf6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_3e9890f2-8f9b-4885-9007-63337d2daaa8" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://momentus.space/role/IntangibleAssetsnetScheduleofFutureEstimatedAmortizationExpenseDetails" xlink:type="simple" xlink:href="mnts-20230930.xsd#IntangibleAssetsnetScheduleofFutureEstimatedAmortizationExpenseDetails"/>
  <link:calculationLink xlink:role="http://momentus.space/role/IntangibleAssetsnetScheduleofFutureEstimatedAmortizationExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_237e3dc8-e70b-422f-9762-c8707e8b5150" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_8d75af20-eaf3-4c8b-a9ce-cc2a7ebd1566" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_237e3dc8-e70b-422f-9762-c8707e8b5150" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_8d75af20-eaf3-4c8b-a9ce-cc2a7ebd1566" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mnts_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour_18ef0a4b-9b84-4443-8922-ceee08c2c9ea" xlink:href="mnts-20230930.xsd#mnts_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_237e3dc8-e70b-422f-9762-c8707e8b5150" xlink:to="loc_mnts_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour_18ef0a4b-9b84-4443-8922-ceee08c2c9ea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_0795fd09-856c-4099-a7e8-b31d4c0ed63b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_237e3dc8-e70b-422f-9762-c8707e8b5150" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_0795fd09-856c-4099-a7e8-b31d4c0ed63b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_ce06b3fb-b847-4120-88a3-dd9e9aa4fcc3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_237e3dc8-e70b-422f-9762-c8707e8b5150" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_ce06b3fb-b847-4120-88a3-dd9e9aa4fcc3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_832614fd-5e2d-4cd7-9f1a-2a0274100cf5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_237e3dc8-e70b-422f-9762-c8707e8b5150" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_832614fd-5e2d-4cd7-9f1a-2a0274100cf5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_23fb5764-53b1-477f-92a5-c644824eb2d2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_237e3dc8-e70b-422f-9762-c8707e8b5150" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_23fb5764-53b1-477f-92a5-c644824eb2d2" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://momentus.space/role/LeasesScheduleofComponentsofOperatingLeaseExpenseDetails" xlink:type="simple" xlink:href="mnts-20230930.xsd#LeasesScheduleofComponentsofOperatingLeaseExpenseDetails"/>
  <link:calculationLink xlink:role="http://momentus.space/role/LeasesScheduleofComponentsofOperatingLeaseExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCost_6b640845-1b95-4ed5-b60e-5b916aa22226" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LeaseCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_e4f7e5a4-e000-41af-b974-76b56fa18c05" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_6b640845-1b95-4ed5-b60e-5b916aa22226" xlink:to="loc_us-gaap_OperatingLeaseCost_e4f7e5a4-e000-41af-b974-76b56fa18c05" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermLeaseCost_efde617a-5d82-4a03-aa0f-2a019278b7fc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShortTermLeaseCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_6b640845-1b95-4ed5-b60e-5b916aa22226" xlink:to="loc_us-gaap_ShortTermLeaseCost_efde617a-5d82-4a03-aa0f-2a019278b7fc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableLeaseCost_062bfae2-0f98-40fe-a809-b6a8cfc19106" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_VariableLeaseCost"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_6b640845-1b95-4ed5-b60e-5b916aa22226" xlink:to="loc_us-gaap_VariableLeaseCost_062bfae2-0f98-40fe-a809-b6a8cfc19106" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://momentus.space/role/LeasesScheduleofMaturitiesofOperatingLeaseLiabilitiesDetails" xlink:type="simple" xlink:href="mnts-20230930.xsd#LeasesScheduleofMaturitiesofOperatingLeaseLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://momentus.space/role/LeasesScheduleofMaturitiesofOperatingLeaseLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_a5aab60a-f5f2-4970-8a61-a4b16bd5e756" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_3e922907-16a7-4ae5-8988-98ef2d4f5fc6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_a5aab60a-f5f2-4970-8a61-a4b16bd5e756" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_3e922907-16a7-4ae5-8988-98ef2d4f5fc6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mnts_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour_b975c3c9-2df2-43f4-a36b-11da2a0c31c0" xlink:href="mnts-20230930.xsd#mnts_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_a5aab60a-f5f2-4970-8a61-a4b16bd5e756" xlink:to="loc_mnts_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour_b975c3c9-2df2-43f4-a36b-11da2a0c31c0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_f2601dc9-0f7f-47a9-8d79-7d599ca00f5a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_a5aab60a-f5f2-4970-8a61-a4b16bd5e756" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_f2601dc9-0f7f-47a9-8d79-7d599ca00f5a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_fd1386c2-3b6d-4cd4-850c-98547afcacb1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_a5aab60a-f5f2-4970-8a61-a4b16bd5e756" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_fd1386c2-3b6d-4cd4-850c-98547afcacb1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_95dfa864-58cb-42e1-bc93-f8e766fd01cb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_a5aab60a-f5f2-4970-8a61-a4b16bd5e756" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_95dfa864-58cb-42e1-bc93-f8e766fd01cb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_779b4086-c786-4907-98f1-333931a23cd7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_a5aab60a-f5f2-4970-8a61-a4b16bd5e756" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_779b4086-c786-4907-98f1-333931a23cd7" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://momentus.space/role/LeasesScheduleofMaturitiesofOperatingLeaseLiabilitiesDetails_1" xlink:type="simple" xlink:href="mnts-20230930.xsd#LeasesScheduleofMaturitiesofOperatingLeaseLiabilitiesDetails_1"/>
  <link:calculationLink xlink:role="http://momentus.space/role/LeasesScheduleofMaturitiesofOperatingLeaseLiabilitiesDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_fb6a1f20-710a-4aa5-8400-16b07491a526" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_25b331f6-1375-4169-b865-01c23b583d32" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_fb6a1f20-710a-4aa5-8400-16b07491a526" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_25b331f6-1375-4169-b865-01c23b583d32" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_817c6023-0463-42ec-8801-0b7e85e0e7a5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_fb6a1f20-710a-4aa5-8400-16b07491a526" xlink:to="loc_us-gaap_OperatingLeaseLiability_817c6023-0463-42ec-8801-0b7e85e0e7a5" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://momentus.space/role/AccruedLiabilitiesDetails" xlink:type="simple" xlink:href="mnts-20230930.xsd#AccruedLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://momentus.space/role/AccruedLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_1a522539-da72-4c5e-9162-d32af9901403" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedProfessionalFeesCurrent_e9a564eb-783b-4ff8-92ff-969d15c4a2c4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccruedProfessionalFeesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_1a522539-da72-4c5e-9162-d32af9901403" xlink:to="loc_us-gaap_AccruedProfessionalFeesCurrent_e9a564eb-783b-4ff8-92ff-969d15c4a2c4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedSalariesCurrent_6d704087-b41e-4b0e-ab20-cc9d051ec7b9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccruedSalariesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_1a522539-da72-4c5e-9162-d32af9901403" xlink:to="loc_us-gaap_AccruedSalariesCurrent_6d704087-b41e-4b0e-ab20-cc9d051ec7b9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mnts_AccruedResearchAndDevelopmentExpensesCurrent_e8fe1cd3-d980-4ce2-ac94-d36c53ece30d" xlink:href="mnts-20230930.xsd#mnts_AccruedResearchAndDevelopmentExpensesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_1a522539-da72-4c5e-9162-d32af9901403" xlink:to="loc_mnts_AccruedResearchAndDevelopmentExpensesCurrent_e8fe1cd3-d980-4ce2-ac94-d36c53ece30d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_61ef1511-8e46-45d5-904e-4ab3059d2a63" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_1a522539-da72-4c5e-9162-d32af9901403" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_61ef1511-8e46-45d5-904e-4ab3059d2a63" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://momentus.space/role/CommitmentandContingenciesScheduleofUnconditionalPurchaseObligationsDetails" xlink:type="simple" xlink:href="mnts-20230930.xsd#CommitmentandContingenciesScheduleofUnconditionalPurchaseObligationsDetails"/>
  <link:calculationLink xlink:role="http://momentus.space/role/CommitmentandContingenciesScheduleofUnconditionalPurchaseObligationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_ba632e85-62ae-4677-805e-bb3f5b2a9383" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary_3f69cb79-2375-41a4-ac88-bff14d49fac4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_ba632e85-62ae-4677-805e-bb3f5b2a9383" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary_3f69cb79-2375-41a4-ac88-bff14d49fac4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear_9776e6a7-1439-4eee-b657-19765e461f48" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_ba632e85-62ae-4677-805e-bb3f5b2a9383" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear_9776e6a7-1439-4eee-b657-19765e461f48" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
