How to use Gas Tracker
Compare Low, Avg, and High gas on Ethereum, BNB Chain, Polygon, and Arbitrum. Check the Ethereum sample chart before you bridge, mint, or deploy when fees spike. An optional ETHERSCAN_API_KEY improves the ETH oracle.
Formula & methodology
Ethereum prefers Etherscan gasoracle when ETHERSCAN_API_KEY is set, otherwise Blockscout stats. Other chains use eth_gasPrice from public RPCs, converted wei→gwei, with simple low/high bands around the average.
Check Ethereum and L2 gas before you send
Gas can turn a cheap mint into an expensive one during an NFT launch or memecoin rush. Checking Ethereum and L2 gas in one place helps you pick a network or wait an hour.
CryptonicTools aggregates public oracles and RPCs with a 60-second cache. Optional Etherscan keys improve Ethereum fidelity. Without a key, Blockscout and RPC estimates still work, and you never need an account.
Use the unit converter to turn gwei into an ETH cost estimate, and the portfolio tracker if you are deciding whether a rebalance is worth the fee. Always simulate in your wallet before signing.
What to do when Ethereum gas spikes
Popular mints, airdrop claims, or L1 settlements can push average gwei far above baseline. If the Low vs High spread is wide, waiting for the next trough often saves more than rushing a non-urgent bridge.
L2s such as Arbitrum, Polygon, and BNB usually stay cheaper but still move with demand. Recheck before large deployments. Public RPC snapshots can lag a few seconds behind premium nodes.
Related searches: eth gas tracker, gas fees, gwei. All CryptonicTools utilities are free, mobile-first, and require no account.