How much does a blockchain transaction cost from gas units and gas price?
A gas fee multiplies computational units by the price paid for each unit, then converts the network token amount into the selected currency using the user-entered token price.
Pricing computational work on-chain
Base fee and priority fee are added to form the effective gas price in gwei. Multiplying by the gas limit and dividing by one billion converts the result into the network's native token.
The currency cost multiplies that token fee by the user-entered token price. Actual gas used can be below the gas limit, and the calculator does not retrieve current network fees or token prices.
From network units to a currency fee
The default transaction combines a gas limit or units-used figure with a gas price. The calculation first produces the fee in the network’s native token and then its currency equivalent.
Separating usage from network price
Gas units describe work; gas price describes the price of that work. Either can raise the final fee, but only gas price usually changes with network demand.
Gas units multiplied by unit price
Total gwei = Base fee + Priority feeFee in token = Gas limit × Total gwei ÷ 1,000,000,000Cost = Fee in token × Token priceThe gwei conversion that causes large errors
Do not mix gwei and whole-token units. A unit-conversion error can inflate the result by orders of magnitude.
- Gas used and gas price are entered in the units shown by the form.
- The native-token price is supplied by the user and remains fixed for the conversion.
- Priority-fee behaviour and refunds are represented only if included by the formula.
Calculations related to gas fee
The following tools examine neighbouring parts of the same calculation without changing the inputs or assumptions used above.
Quick answers
Frequently asked questions
What is the difference between gas limit and gas price?
Gas limit is the maximum gas units allowed, while base fee plus priority fee gives the entered price per gas unit.
Why is gwei divided by one billion?
One billion gwei equals one whole native token unit in the formula used here.
Does the calculator use live Ethereum gas prices?
No. Gas values and token price are entered manually.
Educational content only. This guide is not financial advice.