Ethereum Gas Fee Calculator
Estimate accurate USD costs for different types of Ethereum transactions based on the current Gwei and ETH price.
Network Variables
Estimated Transaction Costs
Native ETH Transfer (21k Gas)
ERC20 Token Transfer (~65k Gas)
DEX Swap (Uniswap)
$6.75
~150,000 Gas Units
NFT Mint (ERC721)
$3.60
~80,000 Gas Units
Frequently Asked Questions
Why are Ethereum gas fees so high for Swaps compared to Transfers?
Gas fees are calculated based on the computational complexity of the transaction. A simple ETH transfer just updates balances and uses exactly 21,000 gas units. A Decentralized Exchange (DEX) swap interacts with multiple smart contracts, routes through liquidity pools, and executes complex math, requiring approximately 150,000 to 200,000 gas units.
What is Gwei?
Gwei is a denomination of Ether (ETH), often used to measure gas prices. One Gwei equals one-billionth of an ETH (0.000000001 ETH). Calculating the USD cost of a transaction uses the formula: Gas Limit × Gwei × 10^-9 × Current ETH Price.
How can I pay less gas?
You can save on gas by waiting for network congestion to drop (typically weekends or late at night UTC), or by using Layer 2 scaling solutions like Arbitrum, Optimism, or Base where transactions cost mere cents while inheriting Ethereum's security.