Ethereum Gas Fee Calculator
Get real-time Ethereum gas fee estimates for different transaction priorities. EIP-1559 compliant calculator with Base Fee + Priority Fee structure for accurate cost predictions.
Gas fees update every 15 seconds. Prices are estimates and may vary based on network conditions.
APIs Used: Etherscan Gas Tracker API for real-time gas prices, CoinGecko API for ETH/USD exchange rate.
APIs Used: Etherscan Gas Tracker API for real-time gas prices, CoinGecko API for ETH/USD exchange rate.
Current Gas Prices Loading...
Slow
~5 min wait
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Standard
~2 min wait
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Fast
~15 sec wait
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Transaction Cost Calculator
ETH Transfer
Standard transferGas Used
21,000
Est. Cost
$--
ERC-20 Transfer
Token transferGas Used
65,000
Est. Cost
$--
Uniswap Swap
Token swapGas Used
150,000
Est. Cost
$--
NFT Transfer
ERC-721 transferGas Used
85,000
Est. Cost
$--
Custom Gas Calculator
Total Gas Cost:
-- ETH
-- ETH
USD Equivalent:
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Max Fee:
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Understanding Gas Fees
EIP-1559 Structure
- Base Fee: Network-determined minimum fee
- Priority Fee: Tip to miners for faster processing
- Max Fee: Maximum you're willing to pay
Transaction Speed
- Slow: Lower cost, 3-5 minutes
- Standard: Balanced cost, 1-2 minutes
- Fast: Higher cost, 15-30 seconds
What Are Ethereum Gas Fees?
Ethereum gas fees are transaction costs paid to network validators for processing and confirming transactions on the Ethereum blockchain. Every operation on Ethereum—from simple ETH transfers to complex smart contract interactions—requires computational resources, measured in "gas units."
How Gas Works
- Gas Limit: Maximum gas units for a transaction
- Gas Price: Amount paid per gas unit (in gwei)
- Total Fee: Gas Limit × Gas Price
- Network congestion affects pricing
EIP-1559 Upgrade
- Base Fee: Burned by network
- Priority Fee: Tip to validators
- More predictable pricing
- Better user experience
Gas Optimization Tips
Time Your Transactions
Monitor network congestion and execute transactions during low-activity periods for better rates.
Use Layer 2 Solutions
Consider Polygon, Arbitrum, or Optimism for lower-cost transactions with Ethereum security.
Batch Transactions
Combine multiple operations into single transactions when possible to reduce total gas costs.
Frequently Asked Questions
Gas fees increase during high network demand. Popular applications, NFT drops, and market volatility create congestion, driving up prices as users compete for block space. Our gas calculator helps you find the optimal fee for your transaction priority.
Slow (3-5 min): Lower fee, suitable for non-urgent transactions.
Standard (1-2 min): Balanced cost and speed for typical use.
Fast (15-30 sec): Higher fee for priority processing, ideal for time-sensitive transactions.
Standard (1-2 min): Balanced cost and speed for typical use.
Fast (15-30 sec): Higher fee for priority processing, ideal for time-sensitive transactions.
Our calculator uses real-time data from Etherscan's gas oracle, updated every 15 seconds. While highly accurate for current conditions, actual fees may vary based on network congestion changes and transaction complexity. Always set appropriate gas limits to avoid failed transactions.
Transactions with insufficient gas fees may remain pending for extended periods or eventually fail. While failed transactions still consume some gas, it's better to use our recommended fees to ensure timely processing and avoid wasted costs.
No, gas fees are not refunded for failed transactions. The network still processes the computation up to the failure point. This is why it's crucial to use our gas calculator to estimate appropriate fees and gas limits before submitting transactions.
Gas Fee Comparison by Transaction Type
| Transaction Type | Typical Gas Limit | Complexity | Use Case |
|---|---|---|---|
| ETH Transfer | 21,000 | Simple | Sending ETH between wallets |
| ERC-20 Transfer | 45,000-65,000 | Medium | Sending tokens (USDC, USDT, etc.) |
| DEX Swap | 150,000-300,000 | Complex | Trading on Uniswap, SushiSwap |
| NFT Transfer | 80,000-120,000 | Medium | Moving NFTs between wallets |
| Smart Contract | 200,000+ | Variable | DeFi protocols, custom contracts |
Best Practices for Gas Fee Management
Do's
- Monitor gas prices before transactions
- Use our calculator for accurate estimates
- Set appropriate gas limits
- Consider Layer 2 for frequent transactions
- Time transactions during low congestion
- Use standard speed for most transactions
Don'ts
- Don't set extremely low gas prices
- Don't panic during high congestion
- Don't ignore failed transaction warnings
- Don't overpay for simple transfers
- Don't rush complex DeFi interactions
- Don't forget to account for gas in wallet balance