API Docs
Search
K
Comment on page

eth_estimateGas

Generates and returns an estimate of how much gas is necessary to allow the transaction to complete. The transaction will not be added to the blockchain.

Parameters

  • Object - The transaction call object
    • from: DATA, 20 Bytes - (optional) The address the transaction is sent from.
    • to: DATA, 20 Bytes - The address the transaction is directed to.
    • gas: QUANTITY - (optional) Integer of the gas provided for the transaction execution. eth_call consumes zero gas, but this parameter may be needed by some executions. **NOTE: this parameter does not have limit or cap. **
    • gasPrice: QUANTITY - (optional) Integer of the gasPrice used for each paid gas.
    • value: QUANTITY - (optional) Integer of the value sent with this transaction
    • data: DATA - (optional) Hash of the method signature and encoded parameters. For details see Ethereum Contract ABI
  • QUANTITY|TAG - integer block number, or the string "latest", "earliest" or "pending", see the default block parameter.

Returns

QUANTITY - the amount of gas used.

Request example

curl --location 'https://rpc.eth.gateway.fm' \
--header 'Content-Type: application/json' \
--data '{
"jsonrpc": "2.0",
"method": "eth_estimateGas",
"params": [
{
"from": "0x3d14de87b5ade1c61a0b7ca29f7632e6e756b8bf",
"to": "0x4c88153de66e84c6691fa6bf5b5823530300a942"
}
],
"id": 1
}'

Response example

{
"jsonrpc": "2.0",
"id": 1,
"result": "0x5208"
}