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Analyzing Market
Glossary

Gwei

Gwei is a tiny unit of ether, Ethereum’s native currency. One gwei is one-billionth of an ether, and it is the unit gas fees are usually quoted in.

How it works

Because a full ether is a large amount relative to the cost of a single transaction, fees are expressed in gwei to keep the numbers readable. When you send an Ethereum transaction, you pay a gas price measured in gwei per unit of gas; the total fee is that price multiplied by the gas the transaction consumes.

Why it matters

Gwei is the practical unit users watch to judge how expensive the network is at any moment. When the network is busy, gas prices in gwei rise as users compete to have their transactions included sooner.

Example

A wallet might estimate a transaction’s gas price at 20 gwei when the network is quiet and far higher when it is congested.

Gwei: Frequently Asked Questions

What is gwei and how does it relate to ether?
Gwei is a tiny unit of ether, Ethereum's native currency. One gwei equals one-billionth of an ether. Because a full ether is large relative to the cost of a single transaction, fees are expressed in gwei to keep the numbers readable. It is the unit gas prices are usually quoted in.
Why are gas prices measured in gwei instead of ether?
A single transaction costs only a tiny fraction of an ether, so pricing it in whole ether would mean awkward, hard-to-read decimals. Quoting the gas price in gwei, where one gwei is a billionth of an ether, keeps the numbers practical and easy to compare at a glance when deciding what to pay.
What is a typical gwei gas price?
It varies with network conditions. A wallet might estimate a transaction's gas price at around 20 gwei when the network is quiet and far higher when it is congested. When activity surges, gas prices in gwei rise as users compete to have their transactions included sooner, so gwei is the practical figure users watch.
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