Ethereum gas fees. Show your working.
To calculate an execution fee in ETH, multiply gas used by the effective gas price in gwei, then divide by one billion. This calculator uses your inputs; additional layer 2 fees are excluded.
Gas fee examples: what changes with gwei?
Doubling gwei doubles the fee when gas used stays fixed. These examples keep gas used at 21,000 and change only its effective price. They are arithmetic scenarios, not recommended fees or live network readings.
| Gas used | Price in gwei | Fee in ETH |
|---|---|---|
| 21,000 | 5 | 0.000105 |
| 21,000 | 10 | 0.00021 |
| 21,000 | 20 | 0.00042 |
Change one input to understand the result
If gas used stays fixed, doubling gwei doubles this calculated fee. Contract interactions may use different gas amounts. For an actual payment, read the transaction receipt; additional L2 data fees are not included here.