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Gas Fee Calculator

Ethereum gas cost in ETH and fiat.

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Only used when operation = Custom.
Gwei
Gwei

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Frequently asked questions

Why do gas prices fluctuate?
Supply-demand. Block has limited gas (~30M). Traders bidding to include their tx drive prices up during NFT mints, big swaps, etc.
What's EIP-1559?
Post-London fork (2021) mechanism. Base fee auto-adjusts per block (burned); user adds priority tip for validators.
How do I reduce gas?
(1) Off-peak (weekends, late nights UTC), (2) Layer-2 (Arbitrum, Optimism — 50x cheaper), (3) batch transactions, (4) use gas-optimised contracts.
Failed transaction — do I lose gas?
Yes. If the tx fails (e.g., slippage breach, insufficient balance), you still pay the gas consumed. Check transaction before signing.