Ethereum Gas Tools
Lightweight calculators for Ethereum transaction costs. Live ETH price, no signup, no fluff.
Gwei to USD Converter
Convert any Gwei value to USD using the live ETH price. See per-unit cost plus totals for transfer, swap, and complex DeFi.
Open converter →ToolETH Gas Fee Calculator
Enter Gwei + gas limit, get exact ETH and USD cost. Includes a cheap/normal/expensive indicator vs the recent average.
Open calculator →ToolBridge Cost Estimator
Live estimate of bridging from Ethereum mainnet to Arbitrum, Optimism, Base, or Polygon via the official native bridges.
Estimate bridge cost →ToolFailed Transaction Cost
How much you actually lose if your transaction reverts. Floor / mid / worst-case cost in ETH and USD, with EVM revert explained.
Open calculator →ToolStablecoin Transfer Fees
Live USDC + USDT transfer cost across Ethereum, Base, Arbitrum, Optimism, and Polygon. See the cheapest network in seconds.
Compare networks →ToolCheapest Way to Send USDC
Focused USDC fee comparison plus a quick decision guide for picking the right network.
Open →ToolCheapest Way to Send USDT
Focused USDT (Tether) fee comparison across the major EVM networks, with network-selection guidance.
Open →Which tool do you need?
Each tool answers a different question. Find your situation below:
- “A wallet quoted me X Gwei — what does that cost?”
- Use the Gwei-to-USD converter for the rate, or the fee calculator when you also know the gas limit and want the exact bill for that specific transaction.
- “Should I bridge to an L2, and what will it cost?”
- The bridge cost estimator prices the one-time move to Arbitrum, Optimism, Base, or Polygon — so you can weigh the bridge fee against the per-transaction savings you'll get afterward.
- “I'm sending stablecoins — which network is cheapest?”
- Start at stablecoin transfer fees for the live USDC + USDT comparison, or go straight to the focused USDC / USDT guides if you already know the token.
- “My transaction might revert — what do I lose?”
- The failed-transaction cost calculator shows the floor / mid / worst-case loss when a swap or mint fails — the one scenario where you pay real gas for nothing. Worth a look before a low-slippage swap during a volatile hour.
How these tools stay accurate
Every calculator pulls the live ETH/USD price and current Ethereum gas reading rather than a cached daily figure, so a dollar estimate reflects the moment you open it — not yesterday's average. Gas-unit assumptions (21,000 for a transfer, ~65,000 for an ERC-20 send, ~150,000 for a Uniswap swap) match the same figures used across the per-transaction pages, so numbers stay consistent whether you start here or on gas fees by transaction type. No signup, no wallet connection — the tools never touch your funds.