Ethereum Unit Converter
Convert between standard Ethereum and EVM denominations with exact high-precision arithmetic. Convert Wei, Kwei, Mwei, Gwei, Szabo, Finney and ETH without floating-point precision errors.
How to Use
Enter the numeric amount in the input field.
Select the source denomination (e.g. ETH, Gwei, or Wei).
Select the target denomination or review the instant all-units breakdown table below.
Click Copy to clipboard to grab the exact integer or fractional value.
Toggle Custom Token Decimals mode to convert custom ERC-20 token base units (e.g. 6 decimals for USDT/USDC).
Why Use Ethereum Unit Converter?
Zero Floating-Point Drift
Eliminates IEEE 754 precision issues by calculating all denomination shifts strictly using BigInt arithmetic.
All Denominations at a Glance
Inspects your value across Wei, Gwei, Szabo, Finney, and ETH simultaneously in a unified matrix.
Custom ERC-20 Decimals
Supports any smart contract decimal parameter from 0 up to 255 base units.
No Network or Wallet Needed
100% browser-based calculations with zero telemetry or server requests.
About This Tool
The Ethereum Unit Converter performs lossless, exact-precision conversions between standard Ethereum denominations (Wei, Kwei, Mwei, Gwei, Szabo, Finney, ETH) and custom ERC-20 token decimals (0–255). All calculations use string parsing and BigInt arithmetic to avoid JavaScript floating-point rounding errors.
Frequently Asked Questions
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