Wei to ETH Converter
Convert any Ethereum denomination to any other, instantly. Type a value into any field and the rest update with exact big-integer math.
Ethereum units explained
Ether is divisible down to the wei, the smallest unit. Every denomination is just a power of ten of wei, so converting is a matter of shifting the decimal point.
| Unit | Wei | Common use |
|---|---|---|
| wei | 1 | Smallest unit, raw values |
| gwei | 1,000,000,000 | Gas prices |
| ether | 1,000,000,000,000,000,000 | Balances, transfers |
Frequently asked questions
How many wei are in 1 ETH?
One ETH equals 1,000,000,000,000,000,000 wei (10^18). Wei is the smallest indivisible unit of ether, named after Wei Dai.
What is gwei used for?
Gwei (10^9 wei) is the unit gas prices are quoted in. A 20 gwei gas price means each unit of gas costs 20 billion wei.
Why use big-integer math instead of floating point?
Ether amounts can exceed the precision of JavaScript floats, which causes rounding errors. This converter uses native BigInt so every conversion is exact.
Is this converter free and private?
Yes. Everything runs in your browser, nothing is sent to a server, and there is no signup.
Building on Ethereum?
Run your code on the node itself. No rate limits, no compute units, flat rate, sub-10ms RPC.