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Ethereum Unit Converter (Wei, Gwei, Ether)

Enter a value in any field

Convert between the three units developers use most on Ethereum, wei, gwei and ether, all at the same time. Wei is the base unit, gwei is one billion wei and is used for gas prices, and ether is the human facing unit at ten to the eighteenth wei. Type a number into any of the three fields and the other two update live, so you can go from a raw wei balance to a readable ether figure, or from a gwei gas price to its wei and ether equivalents, without hunting for a calculator. The tool uses string based arbitrary precision so huge wei values never lose accuracy to floating point rounding. This is ideal for contract debugging, decoding calldata, or sanity checking a wallet balance. All math runs locally in your browser and nothing is sent anywhere.

How to use Ethereum Unit Converter

  1. Enter a value in the wei, gwei or ether field.
  2. Read the equivalent amounts in the other two units.
  3. Copy whichever denomination you need.

Frequently asked questions

Which Ethereum units does this convert between?

It converts across wei, gwei and ether at once. One ether is 10 to the 9th gwei and 10 to the 18th wei.

Can I see all denominations from a single input?

Yes. Enter a value in any one field and the other denominations update together so you can read every unit at a glance.

Does it preserve full 18 decimal precision?

Yes. Values are handled as exact integers in wei, so conversions between units never introduce rounding errors.

What is Ethereum Unit Converter?

Convert between the three units developers use most on Ethereum, wei, gwei and ether, all at the same time. Wei is the base unit, gwei is one billion wei and is used for gas prices, and ether is the human facing unit at ten to the eighteenth wei.

Is Ethereum Unit Converter free to use?

Yes. Ethereum Unit Converter is completely free, with no sign-up and no usage limits.

Does Ethereum Unit Converter work in a web browser?

Yes. Ethereum Unit Converter runs in any modern web browser. There is nothing to download or install.

Is my data private with Ethereum Unit Converter?

Yes. Ethereum Unit Converter runs entirely on your device in your browser, so nothing you enter is uploaded to a server.