Free gas fee calculator for Ethereum, Base, Arbitrum, Optimism, Polygon, and BNB Chain. Estimate swap, transfer, NFT mint.
Updated 2026-10-26 · Live ETH price from CoinGecko
Reset · Auto-calculates as you type. Compare speed levels to avoid overpaying for urgency.
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Gas prices fluctuate constantly. Check current prices on your network's explorer. Actual gas used may differ from estimates.
Quick answer: Ethereum gas fee = Gas Price (Gwei) × Gas Limit × ETH Price. A standard ETH transfer (21,000 gas) at 1 Gwei costs about $0.05. At low base fees a DeFi swap costs only a few cents; congestion spikes raise costs significantly.
The Gas Calculator estimates the total transaction fee in USD for Ethereum and EVM-compatible network transactions. Select chain, gas price presets, speed, and transaction count to instantly see the total fee.
Use it to compare transaction costs across different networks. For time-sensitive trades use the 'fast' preset; for non-urgent transfers, 'standard' or 'slow' saves fees.
Gas price in gwei is the price you're willing to pay per unit of gas. Transaction Speed scales that price: Slow ×0.8, Standard ×1.0, Fast ×1.3, Instant ×1.8. Gas limit is the maximum gas the transaction can consume (21,000 for ETH transfers, 65,000 for ERC-20, 150k–300k for DeFi).
ETH price is auto-filled from CoinGecko. Total fee = gas price × gas limit ÷ 10⁹ × ETH price in USD.
How accurate are the results?
Results are based on your inputs and live ETH price. Actual fees depend on network conditions and exact gas used.
Can beginners use this?
Yes. Clear presets and live updates make it accessible.
Does this store my data?
No. Everything runs in your browser.