Ethereum gas tracker
Live gas price in gwei. Slow / standard / fast plus EIP-1559 base fee. Speed-of-confirmation estimates, refreshed every 15 minutes.
Data refreshes every 15 minutes. If the source did not respond, the page keeps the last values received.
Cost of common transactions
| Transaction | Gas limit | Gwei | ≈ USD | ETH |
|---|---|---|---|---|
| ETH transfer | 21,000 | 0.4 | $0.02 | 0.000008 |
| ERC-20 transfer | 65,000 | 0.4 | $0.06 | 0.000024 |
| Uniswap swap | 180,000 | 0.4 | $0.16 | 0.000066 |
| NFT mint | 250,000 | 0.4 | $0.22 | 0.000092 |
| L2 bridge deposit | 130,000 | 0.4 | $0.11 | 0.000048 |
Gas in Ethereum is the fee for executing operations in smart contracts. A simple ETH transfer costs 21,000 gas; a Uniswap swap — 150–200K; minting an NFT — 250–400K. The dollar cost = gas × gas_price_in_gwei × ETH_price / 10⁹.
Since EIP-1559 (August 2021) gas price has two parts: base fee (burnt, ETH removed from supply) and priority fee (goes to validators as a tip). Base fee is auto-adjusted so target block utilisation stays at 50%. When the network is congested — base fee rises.
The slow / average / fast parameters are recommendations from analysis of the last 200 blocks and pending tx prioritisation. Slow suits non-urgent ops (entering a trend); fast — arbitrage, liquidations and MEV-sensitive trades.
How to save on gas
Use L2
Arbitrum, Base, Optimism — same apps, often the same protocols, gas tens of times cheaper. Bridging via the official bridge takes 10–20 minutes.
Pick weekends and UTC nights
Average gas on Saturday–Sunday is 20–40% lower. If a tx is not urgent — defer it.
Batch transactions
Instead of approve + swap, do a single Permit2 transaction via 1inch or CoW Swap. 30–50% savings.
Watch base fee
When base fee drops below 20 gwei — a good moment for large operations. Set a gas-drop alert through the screener.
FAQ
What is gwei?
Gwei = 10⁻⁹ ETH. 1 ETH = 10⁹ gwei. Gas prices are always quoted in gwei because a normal transaction costs tens or hundreds of gwei × tens of thousands of gas, which in ETH would be 0.0001–0.001 — awkward numbers.
What is the difference between base fee and priority fee?
Base fee is the mandatory part that is burnt (deflationary mechanism). Priority fee is a voluntary tip to the validator. Transactions with higher priority fee are included sooner. On quiet blocks priority fee = 0; in a congested network — 2–5 gwei.
Why did my transaction fail but gas was charged?
Gas pays for the attempt, not for success. If the tx failed due to slippage, insufficient allowance or an internal require() in the contract — gas is still consumed. This is an EVM property; on other VMs (like Solana) a failure does not charge the fee.
Which L2s are better — optimistic or ZK?
Optimistic (Arbitrum, Base, OP) have cheaper transactions but a 7-day challenge window for L1 withdrawals. ZK (zkSync Era, Linea, Polygon zkEVM) are 10–30% more expensive but withdrawals settle in minutes-to-hours and security is stronger (no fraud-proof needed). For most DeFi tasks optimistic is enough.