ethereum Term

What is Wei?

The smallest atomic denomination of Ether, equal to 10^-18 ETH.

Detailed Definition & Context

Named after computer scientist Wei Dai (inventor of b-money), Wei is the native precision unit stored by the Ethereum Virtual Machine (EVM). All smart contract balances are maintained internally in integer Wei.

Practical Example

1 ETH = 1,000,000,000,000,000,000 Wei (10^18 Wei).

Related Concepts

GweiGas Limit

Interactive Tool

Calculate & Explore Wei

Bidirectional converter between Wei, Gwei (Shannon), and Ether (ETH) with USD pricing.

Open Gwei / Wei / ETH Converter