Ethereum gas fee calculator.

Fee = gas used × (base fee + tip). Gas used depends on what the transaction does. The price per unit of gas has two parts.

The base fee is set by the protocol for every block and burnt. It moves at most 12.5% from one block to the next, and the next block's base fee is known exactly.

The tip (priority fee) goes to the validator, and your wallet picks it. Low, Standard and High are what the last 20 blocks actually paid: the 25th percentile, the median and the 75th percentile.

The max fee your wallet shows is only a cap. You are charged base fee + tip, and the rest is never spent.

Some calculators round any gas price under 0.1 gwei up to 0.1. When the base fee sits below that, their estimates come out several times too high. This one shows what the chain reports.

Data: eth_feeHistory and transaction receipts from public Ethereum RPC nodes; ETH/USD from Chainlink's price feed on Ethereum. Refreshed every block.