ETH Gas Fee Calculator — Ethereum Transaction Fee Estimator
Estimate Ethereum gas fees for any transaction type — standard transfer, ERC-20 token, Uniswap swap, NFT mint, or complex contract. See slow/standard/fast speed tiers in both ETH and USD.
ETH Gas Fee
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Fee Range (Slow – Fast)
0.000378 ETH – 0.000630 ETH ($1.32 – $2.21)
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Speed Tiers
Estimated Gas Fee (USD)
$1.47
Gas Fee (ETH)
0.000420 ETH
Transaction Details
Transaction Type Reference
The Formula
Ethereum transaction fees are calculated as Gas Used × Gas Price. Gas Limit is the maximum gas your transaction can consume. Gas Price (in Gwei = 10⁻⁹ ETH) is what you pay per unit of gas. Simple transfers use 21,000 gas, while complex contract interactions can use 300,000+ gas. The total fee in USD depends on the current ETH price, which adds a layer of volatility to transaction cost planning.
Variable Definitions
Gas Units Allowed
Maximum computational work your transaction can consume. Simpler transactions need less gas. Standard ETH transfer: 21,000. ERC-20 token transfer: ~65,000. Complex DeFi interaction: 300,000–500,000.
Price per Gas Unit
Amount you pay per unit of gas, denominated in Gwei (1 Gwei = 10⁻⁹ ETH). Higher price = faster confirmation. Typical range: 5–100 Gwei depending on network congestion.
Base Fee + Priority Fee
EIP-1559 split the fee into the base fee (protocol-mandated, burned, adjusts with congestion) and the priority fee (optional tip to validators). Total price = Base Fee + Priority Fee. Setting a competitive priority fee alone is usually sufficient for timely inclusion.
How to Use This Calculator
- 1
Select your transaction type — each type has a preset gas limit based on typical computation required.
- 2
Adjust the gas price in Gwei (default 20 Gwei). Slow/standard/fast tiers are auto-calculated at 0.9× and 1.5× of your entered price.
- 3
Enter the current ETH price in USD to see your gas fee in dollar terms.
- 4
View the estimated fee in both ETH and USD across all speed tiers.
- 5
Use the slow tier for non-urgent transfers and the fast tier for time-sensitive DeFi trades or NFT mints.
Common Applications
- Estimate the cost of an Ethereum transaction in both ETH and USD before sending to avoid overpaying during network congestion.
- Compare gas fees across slow, standard, and fast priority tiers to choose the right balance of cost and confirmation speed.
- Plan DeFi trades and NFT minting around low-volume hours to minimize transaction costs on the Ethereum network.
Simple ETH transfers use 21,000 gas; complex DeFi transactions can use 300,000+ gas. L2 networks dramatically reduce fees
Understanding the Concept
Ethereum gas fees are the cost of computation on the Ethereum network. Every operation — from simple ETH transfers to complex smart contract interactions — costs gas denominated in Gwei (1 Gwei = 0.000000001 ETH). EIP-1559 (London Fork, August 2021) introduced a base fee that adjusts based on network congestion, plus an optional priority fee (tip) to validators. Gas prices spike during high-demand periods like NFT mints, DeFi liquidations, or popular airdrop claims. To save on fees, use Layer 2 solutions (Arbitrum, Optimism, Base) which offer 10–100x lower costs, or time your transactions during low-volume hours (weekends, late nights UTC). The "Gas Limit" for simple ETH transfers is exactly 21,000 — any unused gas is refunded, but you cannot exceed the limit without the transaction failing. For complex smart contract interactions, setting the gas limit too low causes the transaction to fail while still consuming the gas, resulting in a wasted fee.
Frequently Asked Questions
Sources & References
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