Gas Fee Calculator — ETH, BSC, Polygon, Arbitrum
Free gas fee calculator for Ethereum, BSC, Polygon, Arbitrum, Base, and Optimism. Estimate swap, transfer, NFT mint, and DeFi costs in Gwei and USD before confirming.
Fee Comparison — Ethereum at 1.0 Gwei
| Transaction | Gas | Cost |
|---|---|---|
| ETH Transfer | 21,000 | $0.0508 |
| ERC-20 Transfer | 65,000 | $0.1572 |
| ERC-20 Approve | 46,000 | $0.1113 |
| DEX Swap (simple) | 150,000 | $0.3628 |
| DEX Swap (multi-hop) | 300,000 | $0.7257 |
| NFT Mint | 180,000 | $0.4354 |
| NFT Transfer | 85,000 | $0.2056 |
| Bridge Transfer | 250,000 | $0.6048 |
| Stake/Unstake | 120,000 | $0.2903 |
| Contract Deploy | 1,500,000 | $3.63 |
Gas prices fluctuate constantly. Check current prices on your network's explorer. Actual gas used may differ from estimates.
How to use Gas Fee Calculator — ETH, BSC, Polygon, Arbitrum
The Gas Calculator estimates the total transaction fee in USD for Ethereum and EVM-compatible network transactions. Enter the current gas price in gwei, the gas limit for your transaction type, and the current ETH price to instantly see the total fee — allowing you to decide whether to proceed now or wait for network congestion to ease.
Use it to compare transaction costs across different networks: enter the same gas limit with the native token price for Polygon, BNB Chain, or Arbitrum to see how much cheaper layer-2 transactions are compared to Ethereum mainnet. For time-sensitive trades, use the 'fast' gas preset; for non-urgent transfers, 'standard' saves significant fees during peak hours.
Input guide and assumptions
Gas price in gwei is the price you're willing to pay per unit of gas — this determines transaction priority. Current gas prices are shown in three tiers: slow (base fee only), standard (small tip), and fast (higher tip for quick inclusion). Gas limit is the maximum gas your transaction can consume: 21,000 for ETH transfers, 65,000 for ERC-20 transfers, 150,000–300,000 for DeFi interactions.
ETH price is auto-filled from CoinGecko. The total fee = gas price × gas limit ÷ 10⁹ (converting gwei to ETH) × ETH price in USD. For EIP-1559 transactions, actual cost = (base fee + priority fee) × gas used, where gas used ≤ gas limit. Setting gas limit too low causes transaction failure; setting it too high wastes no ETH (unused gas is refunded).
Understanding gas cost estimates
The gas fee output shows the total transaction cost in both ETH and USD for a given gas limit at the current or specified gas price (in Gwei). The key output to act on is the USD cost — this tells you whether the transaction is economically viable for your intended use. Sending $10 worth of crypto with a $15 gas fee is clearly not rational — use our <a href="/converter/">crypto converter</a> to check exact USD amounts. Paying $5 to bridge $5,000 is reasonable. The ratio of gas fee to transaction value is your efficiency metric.
The urgency multiplier section shows the gas price premium needed to land in the next 1, 3, or 10 blocks. During network congestion, the priority fee (miner tip) is the primary variable — the base fee is protocol-determined and everyone pays the same base fee in the same block. Adding a higher priority fee increases your probability of being included in the next block but does not change your base fee.
Common mistakes to avoid
- Setting max gas fee equal to current gas price with zero priority fee during congestion. Without a priority fee, miners have no incentive to include your transaction over others paying a priority fee — your transaction may be stuck in the mempool for hours or days. Always include at least 1–2 Gwei of priority fee for non-urgent transactions and 2–5 Gwei for urgent ones.
- Not checking gas price before a complex DeFi interaction with a fixed deadline. Limit orders, options expiries, and <a href="/liquidation-calculator/">liquidation thresholds</a> have deadlines. Submitting with low gas during a congestion event means your time-sensitive transaction arrives too late.
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Frequently asked questions
How does the Gas Fee Calculator — ETH, BSC, Polygon, Arbitrum work?
The Gas Fee Calculator — ETH, BSC, Polygon, Arbitrum combines your inputs with standard crypto formulas and outputs a practical result instantly. It is designed for fast planning and is updated live as you change values.
How accurate are the results?
Results are mathematically accurate based on your inputs and available market data. Live prices, fees, slippage, tax treatment, and execution conditions can change final real-world outcomes.
Can beginners use this calculator?
Yes. The interface is built for both beginners and advanced users, with clear labels, defaults, and practical interpretation guidance below the calculator.
Does this tool store my data?
No personal account is required. The calculator runs in your browser and is designed for privacy-first usage.
Can I use this for real trades or investing decisions?
Use it as a decision-support tool, not as guaranteed advice. Always validate risk, fees, and strategy assumptions before committing capital.
Which related calculators should I use next?
After using Gas Fee Calculator — ETH, BSC, Polygon, Arbitrum, compare outcomes with Profit, ROI, Position Size, Tax, and Break-Even calculators to validate your full scenario end-to-end.
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