Ethereum Gas Fee Calculator
Estimate your transaction costs in ETH and USD based on network congestion and gas limits.
Standard transfer is 21,000. DEX swaps are usually 150,000 – 250,000.
Current network price per unit of gas in Gwei.
Current market price of 1 ETH in US Dollars.
Transaction Estimate
Fee in ETH:
Fee in USD:
Total Gwei Used:
Understanding Cryptocurrency Gas Fees
In the world of blockchain, specifically Ethereum and EVM-compatible networks, a "Gas Fee" is the cost required to perform a transaction or execute a smart contract. Think of it as the fuel required to drive from point A to point B on a digital highway.
The Components of Gas Fees
- Gas Limit: This is the maximum amount of "work" you are willing to pay for. Simple transfers of ETH usually require exactly 21,000 units. Complex actions, like swapping tokens on Uniswap or minting an NFT, require significantly more gas because they involve more computational steps.
- Gas Price (Gwei): Gwei is a small denomination of Ethereum (1 Gwei = 0.000000001 ETH). You bid this amount to incentivize miners/validators to include your transaction in the next block. When the network is busy, Gwei prices rise.
- Base Fee & Tip: Since the EIP-1559 upgrade, the gas price is split into a base fee (which is burned) and a priority fee (the tip paid to the validator).
How the Calculation Works
The math behind your transaction cost is straightforward:
Total Fee (ETH) = Gas Limit × Gas Price (in Gwei) / 1,000,000,000
To find the dollar value, you simply multiply the ETH total by the current market price of Ethereum.
Practical Examples
| Transaction Type | Gas Limit | Gwei | Est. Cost (at $2500 ETH) |
|---|---|---|---|
| Standard ETH Transfer | 21,000 | 20 | $1.05 |
| ERC-20 Token Swap | 180,000 | 35 | $15.75 |
| NFT Minting | 250,000 | 50 | $31.25 |
How to Reduce Your Gas Fees
- Time Your Transactions: Gas prices are lower when fewer people are using the network. Weekends and late nights (UTC) are typically cheaper.
- Use Layer 2 Solutions: Networks like Arbitrum, Optimism, and Base offer significantly lower gas fees by processing transactions off the main Ethereum chain.
- Set a Priority Cap: Most wallets allow you to set a maximum gas price. Your transaction will wait until the network price drops to your limit.