ETH Gas Fee Estimator
Estimate transaction costs on Ethereum and Layer 2 networks.
What is this tool?
The Ethereum gas fee estimator calculates transaction costs across the Ethereum mainnet and popular Layer 2 networks (Arbitrum, Optimism, Base, Polygon, zkSync). Gas fees on Ethereum mainnet fluctuate based on network congestion, ranging from a few cents during quiet hours to over $50 during peak demand. Layer 2 networks typically charge 10-100x less. This tool helps you choose the optimal network and timing for transactions.
How to use
- 1
Select transaction type
Choose between simple transfer, ERC-20 swap, NFT mint, or DeFi interaction.
- 2
Enter ETH price
Input the current ETH price in USD.
- 3
Compare networks
See estimated costs across Ethereum mainnet and popular Layer 2 solutions.
Frequently Asked Questions
Why do Ethereum gas fees fluctuate so much?
Ethereum has a fixed block gas limit (~30 million gas per block). When many users submit transactions simultaneously, they compete by offering higher gas prices to miners/validators. This creates a market-driven pricing mechanism. Congestion is typically highest during NFT mints, token launches, and bull markets.
When is the best time to transact on Ethereum?
Gas fees are typically lowest during US holidays, weekends, and between 2-6 AM EST. Use tools like ETH Gas Now to monitor real-time prices. For non-urgent transactions, set a lower max fee and wait for congestion to subside, or use Layer 2 networks where fees are consistently low.
Are Layer 2 networks as secure as Ethereum mainnet?
Optimistic Rollups (Arbitrum, Optimism) inherit Ethereum's security with a 7-day fraud-proof window. ZK-Rollups (zkSync, StarkNet) provide cryptographic security guarantees. Base uses a sequencer model. While slightly less secure than mainnet, Layer 2s offer a practical trade-off: 99% of mainnet security at 1% of the cost.