Ethereum gas forecast
A short-term, pattern-based outlook to help you spot lower-fee windows.
Short-term gas outlook
Look for the next safer lower-fee window across upcoming hours.
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Common cost at best gas
—Estimated USD cost at the next best gas price.
Upcoming lower-fee windows
Next 24h · sorted by avg · UTCLoading windows…
Calculate the dollar cost in seconds
Plug a Gwei value into the converter for an instant USD estimate, or use the full calculator to choose any gas limit.
What the chart above is modeling
The forecast isn't a black box and it isn't machine-learning guesswork. It's a pattern model built on the parts of Ethereum gas that are genuinely structured. Four signals feed the line you see, weighted differently depending on how far out you look:
- Recent momentum (~2h). The last ~600 blocks show whether base-fee demand is climbing, cooling, or flat. This dominates the 1-3 hour part of the curve.
- Time-of-day cycle. Gas peaks during US trading hours (13:00-22:00 UTC) and bottoms overnight. This weight grows across the 6-24 hour view.
- Day-of-week pattern. Weekends run ~30-50% cheaper than mid-week. This signal carries the 24h+ and 7-day tabs.
- Post-spike decay. After a mint or listing spike, the model pulls the forecast back toward the trailing mean over 2-6 hours, faster when the spike is more than 2σ above normal.
The band around the line is a confidence envelope, not a promise — it narrows for short horizons and widens further out. Full methodology and data inputs →
How far out to trust it
An honest forecast tells you where it's reliable and where it isn't. This one is strong on the structured dimensions (timing, weekly rhythm, spike decay) and blind to the unstructured ones (surprise mints, off-cycle CEX listings, macro ETH moves):
- 1-3 hours: reliable on direction — trust the "send now vs wait an hour" call.
- 6-12 hours: reliable on which window is cheapest; treat the exact gwei value as a range.
- 24h+ / 7-day: good for picking the cheaper day, directional only on the hour-by-hour shape.
When you see gas suddenly 3x above the forecast, it's almost always a surprise mint or listing the pattern model can't see coming. The right move is to wait 30-60 minutes for the decay model to take over rather than pay through the spike. For a written walkthrough of the same engine, see the gas fee forecast explainer.
How to use it well
- • Non-urgent transactions are cheapest in the calm off-peak windows the chart flags.
- • Instead of refreshing, save a threshold in Alerts and come back when gas is favorable.
- • Always check live gas before sending anything time-sensitive — the forecast is guidance, not a guarantee.