Generates and returns an estimate of how much gas is necessary to allow the transaction to complete.

This method will use 100 Compute Units.

Reference: Here


from - [optional] String of the address the transaction is sent from.

to - [optional] String of the address the transaction is directed to.

gas - [optional] Integer of the gas provided for the transaction execution.

gasprice - [optional] Integer of the gasPrice used for each paid gas encoded as a hexadecimal.

value - [optional] Integer of the value sent with this transaction encoded as a hexadecimal.

data - [optional] String of the hash of the method signature and encoded parameters. For more information, see the Contract ABI description in the Solidity documentation.


String - hex string value representing an integer of the amount of gas units used.

// Result
  "jsonrpc": "2.0",
  "result": "0x5208" // 21000
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_estimateGas","params":[{see above}],"id":1}'

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