Wei to ETH Converter
Convert between Wei and ETH using the exact factor of ten to the eighteenth power, the number of Wei in a single ether. Wei is the smallest indivisible unit of Ethereum and the unit that smart contracts, RPC responses and transaction data actually use under the hood. Because the numbers get huge, this converter uses arbitrary precision so a value like 1500000000000000000 Wei maps cleanly to 1.5 ETH with no floating point drift. Type into either field and the other updates instantly. This is useful when you are reading raw contract calldata, decoding an event log, or checking a balance returned by a node in base units. Everything is computed locally in your browser, so nothing is uploaded and the full 18 decimal precision is preserved.
How to use Wei to ETH Converter
- Type a wei amount to convert it to ETH.
- Or type an ETH amount to get the exact wei count.
- Copy the precise result for use in contracts or transactions.
Frequently asked questions
How many wei are in one ETH?
One ETH equals 1,000,000,000,000,000,000 wei, that is 10 to the 18th power. Wei is the smallest indivisible unit of ether.
Why does Ethereum use wei instead of decimals?
Smart contracts store balances as whole wei integers to avoid floating point errors. Converting to ETH is only for human readable display.
Is the 18 decimal precision exact?
Yes. The tool treats wei as an exact integer count, so converting to ETH and back returns the original value with no loss.
What is Wei to ETH Converter?
Convert between Wei and ETH using the exact factor of ten to the eighteenth power, the number of Wei in a single ether. Wei is the smallest indivisible unit of Ethereum and the unit that smart contracts, RPC responses and transaction data actually use under the hood.
Is Wei to ETH Converter free to use?
Yes. Wei to ETH Converter is completely free, with no sign-up and no usage limits.
Does Wei to ETH Converter work in a web browser?
Yes. Wei to ETH Converter runs in any modern web browser. There is nothing to download or install.
Is my data private with Wei to ETH Converter?
Yes. Wei to ETH Converter runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
Badge
Link this tool from a README, doc or site. The badge links back to this page.
[](https://yourhack.ai/wei-to-eth)