About Gas Fee Calculator
Every transaction on Ethereum requires gas — a unit of computational effort. The total transaction fee equals (gas limit × gas price) + (gas limit × priority fee). Gas limit represents the maximum computation units the transaction can consume (21,000 for a simple ETH transfer, more for smart contract interactions). Gas price is how much you are willing to pay per unit of gas, denominated in Gwei.
Since EIP-1559, Ethereum transactions include a base fee (set by the protocol and burned) and an optional priority fee (tip) paid to validators. This calculator combines both to show the total cost in Wei, Gwei, ETH, and USD, giving you a complete picture before you submit a transaction.
How to estimate gas
For a simple ETH transfer, use a gas limit of 21,000. For ERC-20 token transfers, 65,000 is a common estimate. Complex DeFi interactions like Uniswap swaps may use 150,000–300,000 gas. NFT mints vary widely. Check the gas estimate from your wallet or the contract's documentation for a more precise figure.