Ethereum Gas Fee Estimator
Gas fee = gas limit × gas price (Gwei), then convert the fee into ETH and USD.
Results
Fill in the inputs and click Calculate.
- Fee (Gwei)
- –
- Fee (ETH)
- –
- Fee (USD)
- –
Risk disclaimer
Gas prices move in real time; the fee charged follows the block that includes the tx — an estimate here.
What drives the gas fee?
The gas limit depends on transaction complexity (≈21,000 for a plain transfer, more for contract calls).
The gas price reflects network congestion and is quoted in Gwei (1 ETH = 10^9 Gwei).
How to use
- Enter the transaction's gas limit.
- Enter the current suggested gas price (Gwei).
- Enter the ETH price for the USD view.
- Click Calculate for the fee in Gwei, ETH and USD.
Formula
- Fee (Gwei) = gas limit × gas price
- Fee (ETH) = fee (Gwei) ÷ 10^9
- Fee (USD) = fee (ETH) × ETH price
Example
Gas limit 21,000 at 30 Gwei and ETH 3,500 → fee ≈ 0.00063 ETH ≈ 2.21 USD.
In congestion prices can reach hundreds of Gwei, multiplying the same tx's cost.
FAQ
Why Gwei?
It is the standard on-chain unit: 1 ETH = 1e9 Gwei, giving readable prices.
Is this an L2 fee?
This follows the L1 mainnet convention; Layer-2 fee rules differ, so use their official tools.