STRATO · Free tools
Gwei to USD Converter
Convert gwei to US dollars and back using the live ETH price. Enter an amount of gwei to see its value in USD and ETH, or estimate the dollar cost of a transaction's gas.
Estimate a transaction's gas cost
Multiply the gas a transaction uses by the gas price to get its cost in dollars.
What is gwei?
Gwei (gigawei) is a denomination of ether, the native currency of Ethereum. One ETH is equal to 1,000,000,000 (one billion) gwei, so 1 gwei is 0.000000001 ETH. Gas prices on Ethereum are almost always quoted in gwei because the numbers are far more human-readable than tiny fractions of an ETH.
To convert gwei to USD you need two things: the amount of gwei, and the current ETH price in dollars. The formula is simply USD = gwei ÷ 1,000,000,000 × ETH price. This converter fetches the live ETH price for you, but you can override it to model any price.
Estimating gas costs in dollars
A transaction's fee is the gas price (in gwei) multiplied by the amount of gas the transaction uses. A simple ETH transfer uses 21,000 gas; a token transfer or swap can use 60,000–200,000+ gas. Multiply the gas units by the gas price in gwei to get the total gwei, then convert to USD to see the real cost of a transaction before you send it.
Frequently asked questions
How many gwei are in 1 ETH?
There are exactly 1,000,000,000 gwei in 1 ETH. Gwei is the most common unit for expressing gas prices because it avoids very small decimal numbers.
How do I convert gwei to USD?
Divide the gwei amount by one billion to get the value in ETH, then multiply by the current ETH price in dollars. For example, 500,000,000 gwei is 0.5 ETH, which at an ETH price of $3,000 is $1,500.
Why are Ethereum gas fees shown in gwei?
Gas prices are tiny fractions of an ETH, so expressing them in gwei keeps the numbers readable — for instance '20 gwei' instead of '0.00000002 ETH'. The final fee you pay is the gas price in gwei multiplied by the gas your transaction consumes.
Put the numbers to work on STRATO
Access on-chain yield, tokenized assets and low-cost transactions — all from one platform.
Launch the app