eth_estimateGas

Generates and returns an estimate of gas required to execute a transaction.

Parameters

1. Transaction Object - Same as eth_call
   • from (optional): Sender address
   • to: Recipient or contract address
   • gas (optional): Gas limit
   • gasPrice (optional): Gas price
   • value (optional): Value in wei
   • data: Encoded function data

{
  "jsonrpc": "2.0",
  "method": "eth_estimateGas",
  "params": [{
    "from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155",
    "to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
    "value": "0x9184e72a"
  }],
  "id": 1
}

Returns

QUANTITY - The estimated gas amount.

Implementation Examples

cURL

curl -X POST https://api-tron-jsonrpc.dwellir.com/YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_estimateGas",
    "params": [{
      "to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
      "data": "0x"
    }],
    "id": 1
  }'

JavaScript

// Using ethers.js
const tx = {
  to: "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
  value: ethers.parseUnits("1", 6), // 1 TRX
  data: "0x"
};

const gasEstimate = await provider.estimateGas(tx);
console.log('Estimated gas:', gasEstimate.toString());

Example Response

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