🐢 Low
⚡ Standard
Fast
Tips to Save on Gas Fees
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What are Ethereum Gas Fees?
Gas fees are payments made by users to compensate for the computing energy required to process and validate transactions on the Ethereum blockchain. They are denominated in "Gwei" — a unit of ETH where 1 Gwei = 0.000000001 ETH. Every operation on Ethereum requires a specific amount of computational work, measured in "gas units." The total cost is: Gas Units × Gas Price (Gwei).
How EIP-1559 Changed Gas Fees
gas_eip1559_two_component_intro
Base Fee (Burned)
A protocol-determined fee that adjusts automatically based on demand. This amount is permanently destroyed, making ETH deflationary during high usage. The base fee can only change by ±12.5% per block.
Priority Tip (To Validators)
An optional tip to validators as an incentive for faster inclusion. During low congestion, 1–2 Gwei is usually sufficient.
Gas Costs by Transaction Type
| Transaction | Gas Units | @ 20 Gwei | @ 100 Gwei |
|---|---|---|---|
| eth_transfer | 21,000 | ~$1.50 | ~$7.50 |
| erc_20_transfer | 65,000 | ~$4.50 | ~$23 |
| uniswap_swap | 150,000–300,000 | ~$10–21 | ~$52–105 |
| nft_mint | 100,000–250,000 | ~$7–17 | ~$35–87 |
| aave_deposit | 200,000–400,000 | ~$14–28 | ~$70–140 |
*Estimates based on ETH ≈ $3,500.
Layer 2: The Gas Fee Solution
| Network | Avg Swap Cost | savings_vs_l1 |
|---|---|---|
| arbitrum | $0.10–$0.50 | ~95–99% |
| optimism | $0.10–$0.50 | ~95–99% |
| Base | $0.01–$0.10 | ~99%+ |
| zkSync Era | $0.05–$0.30 | ~97–99% |
| polygon | $0.01–$0.05 | ~99%+ |
Frequently Asked Questions
Why are Ethereum gas fees so high?+
What is Gwei?+
What's the cheapest time to transact?+
Can I cancel a pending transaction?+
Why did my transaction fail but I still paid gas?+
Will gas fees ever go down permanently?+
Disclaimer
Gas fee estimates are based on recent Ethereum blocks and may fluctuate rapidly. Actual costs depend on gas limit, data size, and network conditions. This tool is for informational purposes only.