Ethereum / EVM Unit Converter
Convert between Wei, Gwei, and Ether, and estimate gas fees for legacy or EIP-1559 transactions.
How to use the Ethereum / EVM Unit Converter
- Type an amount into the Wei, Gwei, or Ether field — the other two fields update immediately.
- If an amount is invalid (negative, non-numeric, or has more decimal places than that unit supports), an inline error explains why, and the other two fields keep their last valid values.
- In the Gas Fee Calculator, enter a Gas Limit (shared by both modes).
- Choose the Legacy tab and enter a Gas Price (Gwei), or choose the EIP-1559 tab and enter Base Fee, Max Priority Fee, and Max Fee (all in Gwei).
- The total estimated transaction cost appears in Wei, Gwei, and ETH, each with its own Copy button.
- For EIP-1559, if Base Fee + Max Priority Fee would exceed your Max Fee, a warning shows that the effective price was capped at Max Fee.
How This Tool Works
Type an amount into the Wei, Gwei, or Ether field — the other two update instantly, converted with exact integer (bigint) precision, never floating-point rounding.
In the Gas Fee Calculator, enter a Gas Limit and either a Legacy Gas Price or EIP-1559 Base Fee / Max Priority Fee / Max Fee, and the total transaction cost is shown in Wei, Gwei, and ETH.