Ethereum Developer Toolkit
Free browser-based utilities for Ethereum and Solidity developers. Convert units, hash with Keccak256, compute function selectors, encode ABI calldata, and validate addresses. Everything runs in your browser — no data is sent to any server.
ETH Unit Converter
Convert between Wei, Gwei, Finney, and Ether with full BigInt precision — no floating point errors.
wei
1000000000000000000
kwei
1000000000000000
mwei
1000000000000
gwei
1000000000
microether
1000000
milliether
1000
ether
1
Ethereum unit conversion table
| Unit | Wei equivalent | Common name | Typical use |
|---|---|---|---|
| wei | 1 | wei | Smallest unit — contract values, balances |
| kwei | 1,000 (10³) | babbage | Rarely used |
| mwei | 1,000,000 (10⁶) | lovelace | Rarely used |
| gwei | 1,000,000,000 (10⁹) | shannon | Gas prices, EIP-1559 fees |
| microether | 10¹² | szabo | Occasional tooling |
| milliether | 10¹⁵ | finney | Occasional tooling |
| ether | 10¹⁸ | ETH | Balances, transfers, staking |
1 Ether = 1018 Wei = 109 Gwei. 1 Gwei = 109 Wei.