About GWEI
GWEI is a live Ethereum gas tracker. It shows the current base fee and priority fee, what to set for a fast, normal, or cheap transaction, and what that costs in dollars.
Where the numbers come from
The base fee and priority fee come straight from the Ethereum chain, read with an eth_feeHistory call through Alchemy, not from a third-party gas oracle. Fast, normal and cheap are the 75th, 50th and 25th percentile tips paid over the last few blocks.
The ETH/USD price comes from Etherscan, refreshed every five minutes. When no price is available, GWEI shows no dollar figures rather than a guess.
How current is current
The page looks for a new reading every 15 seconds while a tab is open, and a reading is never more than 30 seconds old. There is no scheduled job behind it: a reading only happens when someone actually loads the page.
For agents and developers
The current gas price and the 24 hour fee history are both available as JSON, at /api/gas and /api/gas/history, described in an OpenAPI file at /openapi.json. Every page on the site also serves a Markdown rendering when the request's Accept header includes text/markdown. /llms.txt has the full index.
Who built it
GWEI is built and run by Ryan. Questions or corrections go on the contact page.