Crypto Gas Fee Calculator
Calculate Ethereum-style transaction costs from gas price and gas limit.
Please note: Cryptocurrency is highly volatile and can lose value rapidly. All prices are entered manually — no live market data is used. Nothing here is investment advice.
What the Crypto Gas Fee Calculator does
Gas fees pay validators for computation. The cost is gas used multiplied by gas price, denominated in gwei — one billionth of the native coin. Simple transfers use a fixed 21,000 gas; contract interactions use far more.
Formula
Total gwei = (Gas price + Priority fee) × Gas limitCost in coins = Total gwei × 10⁻⁹Cost in currency = Cost in coins × Coin price
Inputs explained
| Input | Unit | Required | Notes |
|---|---|---|---|
| Gas price | gwei | Yes | Accepts 0 or more. |
| Gas limit | number | Yes | 21,000 for a simple transfer; 100,000+ for contracts. Accepts more than 0. |
| Coin price | selected currency | Yes | Price of ETH or the native chain token. Accepts more than 0. |
| Priority fee (tip) | gwei | Optional | Accepts 0 or more. |
| Currency | one of 10 options | Optional | — |
How to use it
- Choose Currency.
- Enter Gas price, Gas limit and Coin price.
- Optionally add Priority fee (tip).
- Select Calculate.
Worked example
A simple ETH transfer at 25 gwei with ETH at $3,000.
- Gas price
- 25
- Gas limit
- 21000
- Coin price
- 3000
25 × 21,000 = 525,000 gwei = 0.000525 ETH = $1.58.
Frequently asked questions
Why did my transaction fail but still cost gas?
Validators consumed computation attempting it. Failed transactions still consume the gas used up to the point of failure, though unused gas is returned.
How do I reduce gas costs?
Transact during off-peak hours, use layer-2 networks, batch operations where possible, and set a lower priority fee if you are not in a hurry.