Estimate network fees
Gas fees vary wildly between networks and transaction types. Before you mint that NFT or bridge tokens, use this to avoid a nasty surprise that eats into your profits.
Estimated Fee
Ethereum's "gas" name comes from the idea of fueling computation — every operation in a smart contract, from a simple transfer to a complex swap, consumes a specific, predefined amount of gas.
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What are Gas Fees? Gas fees are the costs required to execute transactions on a blockchain network. They're named after the computational work needed to process transactions, similar to how gasoline fuels a car. Each network has its own pricing model.
How Gas Fees Work Gas fees fluctuate based on network demand. During high traffic periods, users compete by offering higher fees to get their transactions prioritized. Ethereum's EIP-1559 introduced base fees that are burned, making ETH deflationary.
Network Comparison Ethereum has the highest fees but most security. Polygon and Avalanche offer cheaper alternatives with faster finality. Optimism and other Layer 2 solutions bundle transactions to reduce costs while maintaining Ethereum security.
Transaction Types Simple token transfers cost less than complex smart contract interactions. NFT mints and DEX swaps require more computational work, making them more expensive. Bridge transactions typically cost more due to cross-chain verification.
Optimizing Fees Time your transactions during off-peak hours (typically late night or early morning). Use Layer 2 networks for savings. Set custom gas limits to avoid overpaying. Some wallets let you adjust priority fees for faster confirmation.
Example: Say you're doing a DEX swap on Ethereum. Select Network: Ethereum and Transaction Type: DEX Swap — the calculator estimates $8. Switch the network to Polygon with the same swap and the estimate drops to $0.05 — a difference worth knowing before you confirm.
Ethereum's security and decentralization come at a cost — its base layer has less transaction throughput than newer chains like Polygon or Avalanche, so demand for block space pushes fees up during busy periods.
No — these are static illustrative estimates for comparing networks and transaction types, not real-time network data. Actual fees fluctuate constantly based on network congestion.
Time transactions during off-peak hours, use a Layer 2 network like Optimism or Polygon instead of Ethereum mainnet, and set a custom gas limit so you don't overpay for simple transfers.