eth_estimateGas RPC Method

Parameters

transaction

object

The transaction call object:

from

string

The address from which the transaction is sent

to

string

REQUIRED

The address to which the transaction is addressed

gas

integer

The integer of gas provided for the transaction execution

gasPrice

integer

The integer of gasPrice used for each paid gas encoded as hexadecimal

value

integer

The integer of value sent with this transaction encoded as hexadecimal

data

string

The hash of the method signature and encoded parameters. For more information, see the Contract ABI description in the Solidity documentation.

blockNumber

string

The block number in hexadecimal format or the string latest, earliest, pending, safe or finalized

object

object

The state override set with address-to-state mapping where each address maps to an object containing

balance

string

Fake balance to set for the account before executing the call

nonce

string

Fake nonce to set for the account before executing the call

code

integer

Fake EVM bytecode to inject into the account before executing the call

state

string

Fake key-value mapping to override all slots in the account storage before executing the call

stateDiff

string

Fake key-value mapping to override individual slots in the account storage before executing the call

Returns

quantity

The estimated amount of gas used

Request

curl https://docs-demo.quiknode.pro/ \
  -X POST \
  -H "Content-Type: application/json" \
  --data '{"method":"eth_estimateGas","params":[{"from":"0x8D97689C9818892B700e27F316cc3E41e17fBeb9","to":"0xd3CdA913deB6f67967B99D67aCDFa1712C293601","value":"0x186a0"}],"id":1,"jsonrpc":"2.0"}'

require 'eth'

client = Eth::Client.create 'https://docs-demo.quiknode.pro/'
payload = {
    "jsonrpc": "2.0",
    "method": "eth_estimateGas",
    "params": [{"from":"0x8D97689C9818892B700e27F316cc3E41e17fBeb9","to":"0xd3CdA913deB6f67967B99D67aCDFa1712C293601","value":"0x186a0"}],
    "id": "1"
}

response = client.send(payload.to_json)
puts response

import { ethers } from "ethers";
(async () => {
  const provider = new ethers.JsonRpcProvider("https://docs-demo.quiknode.pro/");
  const estimate = await provider.estimateGas({
    "from": "0x8D97689C9818892B700e27F316cc3E41e17fBeb9",
    "to": "0xd3CdA913deB6f67967B99D67aCDFa1712C293601",
    "value": "0x186a0",
  });
  console.log(estimate);
})();

var myHeaders = new Headers();
myHeaders.append("Content-Type", "application/json");

var raw = JSON.stringify({
  "method": "eth_estimateGas",
  "params": [
    {
      "from": "0x8D97689C9818892B700e27F316cc3E41e17fBeb9",
      "to": "0xd3CdA913deB6f67967B99D67aCDFa1712C293601",
      "value": "0x186a0"
    }
  ],
  "id": 1,
  "jsonrpc": "2.0"
});

var requestOptions = {
  method: 'POST',
  headers: myHeaders,
  body: raw,
  redirect: 'follow'
};

fetch("https://docs-demo.quiknode.pro/", requestOptions)
  .then(response => response.text())
  .then(result => console.log(result))
  .catch(error => console.log('error', error));

import requests
import json

url = "https://docs-demo.quiknode.pro/"

payload = json.dumps({
  "method": "eth_estimateGas",
  "params": [
    {
      "from": "0x8D97689C9818892B700e27F316cc3E41e17fBeb9",
      "to": "0xd3CdA913deB6f67967B99D67aCDFa1712C293601",
      "value": "0x186a0"
    }
  ],
  "id": 1,
  "jsonrpc": "2.0"
})
headers = {
  'Content-Type': 'application/json'
}

response = requests.request("POST", url, headers=headers, data=payload)

print(response.text)

require "uri"
require "json"
require "net/http"

url = URI("https://docs-demo.quiknode.pro/")

https = Net::HTTP.new(url.host, url.port)
https.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = "application/json"
request.body = JSON.dump({
  "method": "eth_estimateGas",
  "params": [
    {
      "from": "0x8D97689C9818892B700e27F316cc3E41e17fBeb9",
      "to": "0xd3CdA913deB6f67967B99D67aCDFa1712C293601",
      "value": "0x186a0"
    }
  ],
  "id": 1,
  "jsonrpc": "2.0"
})

response = https.request(request)
puts response.read_body

from web3 import Web3, HTTPProvider
w3 = Web3(HTTPProvider('https://docs-demo.quiknode.pro/'))
estimate = w3.eth.estimate_gas({"from":"0x8D97689C9818892B700e27F316cc3E41e17fBeb9","to":"0xd3CdA913deB6f67967B99D67aCDFa1712C293601","value":"0x186a0"})
print(estimate)

import { Core } from '@quicknode/sdk'

const core = new Core({
  endpointUrl: "https://docs-demo.quiknode.pro/",
})

core.client
    .estimateGas({
      account,
      to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
      value: parseEther('1')
    })
    .then(res => console.log(res))

Response

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

Don't have an account yet?

Create your QuickNode endpoint in seconds and start building

Get started for free