eth_estimateGas

Returns an estimate of the gas that would be used in a transaction with the given parameters.

Params

1. Transaction: Object. A standard Ethereum transaction object containing the following fields:
   1. to: string. The destination address of the message.
   2. data: string (optional). Either a byte string containing the associated data of the message, or in the case of a contract-creation transaction, the initialisation code.
   3. value: string (optional). The value transferred for the transaction in wei, encoded as a hex string.
2. BlockNumber: string (optional). The block number to get the gas estimate at. If omitted, the latest block is used.

Result

Returns a Promise that resolves with a hex string containing the estimated gas.

Example

const gas = await provider.request({
  method: 'eth_estimateGas',
  params: [
    {
      to: '0x...',
      data: '0x...'
    },
    'latest'
  ]
});
console.log(gas); // ['0x...']