ETH Gas Fee Calculator
Convert gas limit and gwei into ETH and USD instantly — with presets for common operations.
Quick presets
Estimated Transaction Fee
Total gwei
Total ETH
Effective gas price
Estimated cost on L2 (vs this L1 fee)
Arbitrum
Optimism
Base
Polygon zkEVM
Rough proportions vs L1 for the same operation. Actual L2 fees depend on calldata size and current blob/calldata pricing.
How to Use
- Enter the gas limit for your operation, or click a preset (transfer, swap, NFT mint, DeFi).
- Enter the current base gas price in gwei (check Etherscan Gas Tracker for live values).
- Enter your priority tip in gwei (1-2 gwei is typical, higher in congestion).
- Enter the current ETH price in USD.
- Read the fee in gwei, ETH, and USD — plus rough L2 equivalents.
Calculation Method
total_gwei = gas_limit × (base_gas_price + priority_fee)
total_eth = total_gwei ÷ 1,000,000,000
total_usd = total_eth × eth_price_usd
total_eth = total_gwei ÷ 1,000,000,000
total_usd = total_eth × eth_price_usd
- gas_limit
- — gas units the op consumes (21,000 for ETH transfer).
- base_gas_price
- — EIP-1559 base fee (burned), set by the network per block.
- priority_fee
- — miner/validator tip you pay on top.
- 1 gwei
- — 1 / 1,000,000,000 ETH.
Source / Last updated: Standard EIP-1559 fee formula. Gas-limit presets are typical ranges. Last reviewed for SmartCryptoCalcs in May 2026.
Examples
Example 1 — Plain ETH transfer at 25 gwei
Gas limit 21,000, base 25 gwei, tip 2 gwei. Total = 21,000 × 27 = 567,000 gwei = 0.000567 ETH. At $3,820/ETH = $2.17. On Base L2, the same transfer would cost roughly $0.10.
Example 2 — NFT mint during a congested moment
Gas limit 200,000, base 80 gwei, tip 5 gwei. Total = 200,000 × 85 = 17,000,000 gwei = 0.017 ETH. At $3,820/ETH = $64.94. This is why bots and contracts often wait for off-peak hours.
Frequently Asked Questions
A gwei is one-billionth of an ETH (1 ETH = 1,000,000,000 gwei). Gas prices are denominated in gwei because actual fees per unit of computation are very small fractions of ETH.
Ethereum has finite block space. When demand exceeds supply — popular NFT mints, market crashes, hot DeFi launches — users bid up gas to get included. EIP-1559 base fee adjusts up by up to 12.5% per block during congestion.
Optimistic rollups (Arbitrum, Optimism, Base) and zk-rollups (Polygon zkEVM, zkSync, Scroll) batch transactions off-chain and post compressed proof to L1. After EIP-4844 blobs, typical L2 transactions cost 3-10% of equivalent L1 cost.
Base fee is burned (removed from ETH supply) and set by the network per block. Priority fee (the tip) goes to validators as their incentive to include your transaction. Wallets usually suggest both; you can override in advanced mode.
Gas is typically cheapest Sat-Sun and during US/EU overnight hours (~02:00-06:00 UTC). Etherscan Gas Tracker shows hourly averages. For non-urgent operations, scheduling tools (or just waiting 24 hours) can cut fees 50%+.
Related Calculators
Not financial advice. DeFi protocols carry smart contract, custody, and liquidity risks beyond price volatility. Estimates here are illustrative — actual returns depend on protocol-specific parameters that change in real time.
Full disclaimer →