Ethereum Gas Fee Calculator
Calculate Ethereum transaction costs with real-time gas price estimates
Gas Fee Calculator
Maximum gas units for transaction
Current network base fee
Tip to miners (max priority fee)
Current ETH price in USD
Transaction Cost
Fee Breakdown
Transaction Details
Cost at Different Gas Prices
⚠️ Maximum possible cost (2x base fee): $2.60 (0.001302 ETH)
💡 Gas Fee Insights
Example: Uniswap Token Swap
Transaction Parameters
Type: Uniswap Swap
Gas Limit: 150,000
Base Fee: 30 Gwei
Priority Fee: 2 Gwei
ETH Price: $2,000
Cost Calculation
Total Gas Price: 30 + 2 = 32 Gwei
Total Gas Cost: 150,000 × 32 = 4,800,000 Gwei
Cost in ETH: 4,800,000 ÷ 1,000,000,000 = 0.0048 ETH
Cost in USD: 0.0048 × $2,000 = $9.60
Gas Fee Tips
Check Gas Prices
Use etherscan.io/gastracker for real-time prices
Time Your Transactions
Weekends and late nights (UTC) are cheaper
Use Layer 2
Polygon, Arbitrum, or Optimism for lower fees
Batch Transactions
Combine multiple operations to save on gas
Set Realistic Priority
Don't overpay - 1-2 Gwei is often enough
Understanding Gas Units
Wei
Smallest unit: 1 ETH = 10¹⁸ Wei
Gwei
1 Gwei = 10⁹ Wei (1 billion Wei)
Gas Limit
Maximum units of gas for transaction
Gas Price
Cost per unit of gas (in Gwei)
Understanding Ethereum Gas Fees
What Are Gas Fees?
Gas fees are transaction costs paid to Ethereum validators for processing and securing transactions on the blockchain. They're measured in Gwei (1 billionth of an ETH) and vary based on network demand.
EIP-1559 Fee Structure
- •Base Fee: Minimum fee set by the network (burned)
- •Priority Fee: Tip to validators for faster processing
- •Max Fee: Maximum you're willing to pay per gas
Gas Fee Formula
Transaction Fee =
Gas Limit × (Base Fee + Priority Fee)
Cost in ETH =
Total Fee (Gwei) ÷ 1,000,000,000
Cost in USD =
Cost in ETH × ETH Price
Factors Affecting Gas
- •Network congestion and demand
- •Transaction complexity
- •Time of day and week
- •Current ETH price volatility
Common Gas Limits
Simple Transfers
- • ETH Transfer: 21,000
- • ERC-20 Transfer: 65,000
- • ERC-20 Approval: 45,000
DeFi Operations
- • Uniswap Swap: 150,000
- • Add Liquidity: 200,000
- • Claim Rewards: 80,000
NFT Transactions
- • NFT Mint: 100,000
- • NFT Transfer: 85,000
- • NFT Marketplace: 120,000