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I deploy the contract to the Rinkeby. Can I calculate the contract deployment cost from HardHat?

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  • Use the hardhat gas report plugin then write and run a unit test , it will show u how much gas the deployment consumed.
    – Majd TL
    Commented Jul 9, 2022 at 12:10

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If you npm install hardhat-gas-reporter in your project directory so that it appears in your package.json then whenever you execute a unit test file from your test folder it should log you a chart like this: Avg. Deployments is where you find the gas cost for deployment

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You can deploy to a standalone hardhat fork of mainnet and monitor the logs. It will give you something like this:

eth_sendRawTransaction
  Contract deployment: <UnrecognizedContract>
  Contract address:    0x6345e5...
  Transaction:         0xee7f0f...
  From:                0xf39fd6...
  Value:               0 ETH
  Gas used:            3439611 of 3439611
  Block #18153240:     0x9963cd...
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