Gas Fee Calculator
Gas Fee Calculator estimates EVM fees from gas used and Gwei on Ethereum, BNB Chain, Base and Polygon, with USD at live rates. Transfer and swap presets.
Calculations and checks on this page run in your browser. Private keys and seed phrases are never uploaded to the server.
About this tool
Gas Fee Calculator estimates EVM fees as gas_used × effective_gas_price. Usage depends on operation complexity; price moves with congestion and is usually quoted in Gwei.
A native ETH transfer baseline is about 21,000 gas; ERC-20 transfer, swap and similar paths are higher and contract-dependent. Built-in presets are experience ranges only.
Optionally pull the chain's current standard gas quote and combine with live native-asset prices for cross-chain and cross-time cost comparison.
How to use
- Select the target chain.
- Enter gas used or pick a common-operation preset.
- Enter Gwei unit price or use Current gas price.
- Read native-coin and USD fee estimates.
FAQ
What Gas Limit should I enter on Ethereum?
Simple transfers 21,000; contract calls should follow wallet simulation or similar txs' Gas Used. Presets do not replace on-chain estimateGas.
What is the difference between Gas Limit and Gas Used?
Limit is a ceiling; you are charged for Used and unused gas is refunded. Too-low Limit causes out-of-gas failure and spent gas is not returned.
Why can Layer 2 Gas Fee Calculator results look low?
Rollup totals often include an L1 data-fee component. This calculator focuses on L2 execution gas × price; real bills may be higher.
How should I read Gwei under EIP-1559?
Treat it as base fee + priority fee (base is burned)—aligned with the total gas price wallets display.