Gwei to USD Calculator: Ethereum Units and Gas Fees

Is your number a gwei amount or a gas price?

A gwei is an Ethereum denomination: 1 gwei equals 0.000000001 ETH. A wallet may use that denomination to display a price per gas unit. To calculate an execution fee, you also need the number of gas units used.

Use Convert a gwei amount for an amount already measured in gwei. Use Estimate a transaction execution fee when your number is a gas price and you also have gas used or an estimate. Ethereum’s gas guide explains the units and basic fee calculation.

This tool uses Ethereum’s denomination. A traded asset with GWEI as its ticker has its own market price. Read the unit and network on your source before copying a number.

How much is 0.05 gwei in USD?

At an invented ETH price of $3,000, an amount of 0.05 gwei equals 0.00000000005 ETH, or $0.00000015. That is the value of the gwei amount entered.

If 0.05 gwei is instead a gas price per unit and a transaction uses 21,000 gas, the arithmetic is:

21,000 × 0.05 ÷ 1,000,000,000 = 0.00000105 ETH

At the same assumed $3,000 ETH price, that execution fee equals $0.00315. The two results answer different questions. The default 21,000 units illustrates a simple ETH transfer; use the appropriate estimate or actual gas used for the operation you are checking.

On a small screen, swipe the table to see every column.

These prices and gas inputs are examples. They do not describe current market conditions, a token-send quote or a fee offered by Crypto Dispensers.

Which gas fields should you enter?

For a completed Ethereum transaction, use the gas actually used and its effective gas price. For a future transaction, use the wallet’s operation-specific estimate and understand that the final result may differ.

EIP-1559 distinguishes the base fee, priority fee, maximum fee and gas limit. A maximum fee per gas is a cap; it is not necessarily the effective price paid. A gas limit is also different from the amount actually used.

1. Write down the network and operation. An ETH send, token transfer, swap and bridge can have different requirements.
2. Identify the units on the source. Confirm whether the price is in wei, gwei or ETH per gas unit.
3. Use a consistent pair. Pair actual gas used with effective gas price for a completed execution-fee calculation; label estimates for an unsigned transaction.
4. Record the ETH/USD assumption. A dollar value calculated at one price can differ from a wallet’s value calculated at another time.

To convert a gas price shown in wei to gwei, divide it by 1,000,000,000. If the source already gives a total fee in ETH, multiplying that amount by your chosen ETH/USD price is sufficient; do not multiply by gas used a second time.

Why a wallet’s total can differ from this calculation

This tool calculates Ethereum-denominated amounts and the execution-fee arithmetic you enter. Check any separate network data costs, provider charges, account setup, bridge costs or additional transactions in the actual route. Other networks can use gwei notation for a different native asset; confirm the network before using an ETH/USD conversion.

A token approval followed by a swap can involve more than one transaction. Include the applicable costs for each step when comparing routes, while avoiding charges already included in a quoted total.

For a practical cost worksheet, read our USDC transfer fee guide. For purchase conditions and where to inspect your own offer, read our Ethereum buying page. A network-fee calculation alone does not describe the full cost of buying ETH.

Common questions