Gas Fee Calculator — Estimate Ethereum and EVM Network Transaction Costs
Calculate Ethereum gas fees in USD and INR. Understand how gas price, gas limit, and network congestion affect transaction costs across EVM chains.
Gas fees have made or broken DeFi strategies. Paying ₹5,000 in gas to claim ₹3,000 in staking rewards is a net loss. Understanding how gas pricing works — and estimating costs before submitting transactions — is basic hygiene for anyone active in Web3. Use the CalcHub Gas Fee Calculator to estimate transaction costs across Ethereum and EVM-compatible chains.
How Gas Fees Work
Every action on Ethereum (and EVM chains) consumes "gas" — a measure of computational effort. You pay for gas in ETH (or the native token on other chains).
Gas Fee = Gas Used × Gas Price (in Gwei) 1 ETH = 1,000,000,000 GweiAfter EIP-1559, gas pricing has two components:
- Base fee — set by the network, burned (destroyed)
- Priority fee (tip) — paid to validators, incentivizes faster inclusion
Total cost = (Base Fee + Priority Fee) × Gas Used
Gas Usage by Transaction Type
| Transaction Type | Typical Gas Used |
|---|---|
| Simple ETH transfer | 21,000 gas |
| ERC-20 token transfer | 45,000–65,000 gas |
| Uniswap simple swap | 100,000–150,000 gas |
| NFT mint (simple) | 80,000–150,000 gas |
| DeFi lending (Aave/Compound) | 150,000–300,000 gas |
| Complex multi-hop swap | 300,000–600,000 gas |
How to Use the Calculator
- Enter gas used (for your transaction type from the table above)
- Enter current gas price in Gwei (check Etherscan gas tracker or your wallet)
- Enter ETH/USD price for fiat cost calculation
- Toggle between Ethereum mainnet, Polygon, Arbitrum, Base, or BNB Chain for chain-specific cost comparisons
Cost Comparison Across Networks
At 30 Gwei base fee and ETH at $3,000 (₹2,50,000):
| Network | Simple Transfer | Swap | DeFi Interaction |
|---|---|---|---|
| Ethereum Mainnet | $1.89 / ₹157 | $9–$14 | $20–$40 |
| Arbitrum | $0.05–$0.20 | $0.20–$0.80 | $0.50–$2 |
| Base | $0.02–$0.10 | $0.10–$0.50 | $0.30–$1 |
| Polygon | $0.01–$0.05 | $0.05–$0.20 | $0.10–$0.50 |
| BNB Chain | $0.05–$0.15 | $0.15–$0.50 | $0.40–$1.50 |
Timing Gas-Sensitive Transactions
Ethereum gas prices follow predictable patterns:
- Lowest: weekends, 2–6 AM UTC (European and US sleep hours)
- Highest: weekday afternoons UTC (US market hours + European afternoon overlap)
For non-urgent transactions, waiting for low-traffic windows can save 30–70% on gas. Etherscan's Gas Tracker shows real-time and historical gas price data.
Gas Estimating for DeFi Strategy
Before entering any DeFi position, calculate gas break-even:
A yield farming position earning 15% APY on $500:
- Expected annual yield: $75
- Gas to enter: $8
- Gas to exit: $8
- Net yield: $59 (after gas) = 11.8% effective APY
Now add rebalancing, claiming rewards, and compounding gas:
- If you claim rewards weekly: 52 × $8 = $416 in claim gas alone
At these values, the yield farming is actually unprofitable. Gas costs must factor into every DeFi yield calculation.
Why do gas fees spike so dramatically sometimes?
Gas price is an auction — validators prioritize transactions offering higher tips. During NFT mints, major protocol launches, or market volatility causing mass DeFi liquidations, thousands of users compete to transact simultaneously, driving gas prices 10–100× above normal. The EIP-1559 base fee adjusts dynamically with demand but can't eliminate these spikes.
What's "gas limit" vs "gas price"?
Gas limit is the maximum gas units you're willing to use for a transaction (you set this; your wallet suggests it). Gas price is what you're willing to pay per unit. If the transaction uses less than the gas limit, unused gas is refunded. If it runs out of gas, the transaction fails and the gas consumed up to that point is not refunded.
Do failed transactions cost gas fees?
Yes — on Ethereum, you still pay gas for failed transactions because validators processed the computation even if it didn't result in a successful state change. This is a meaningful risk with complex DeFi interactions. A failed Uniswap swap can still cost $5–$20 in gas.