11 Hour Timer
A free 11 hour timer that opens preset to 11 hours. Press Start and it counts down in your browser, sounding an alarm at zero. Great for long focus blocks, slow cooking, study sessions and naps. No download, no signup.
What is this timer good for?
- A long focus or writing block with scheduled breaks
- Slow cooking, braising or smoking food
- Tracking a parking meter or appointment window
- A movie-length rest, nap or quiet period
- Capping screen time or a gaming session for kids
How to use it
- The timer opens preset to 11 hours.
- Adjust the hours, minutes or seconds for a different length.
- Press Start and the big display counts down.
- An alarm sounds at 00:00:00 — press Reset to run it again.
How long is 11 hours?
660 minutes is exactly 11 hours — 39,600 seconds in total. That is roughly 45.8% of a 24-hour day. Half of 11 hours is 5 hours 30 minutes, and two rounds back to back add up to 22 hours.
Eleven hours is roughly a nonstop flight from London to Tokyo.
Things that take about 11 hours
- Set 11 hours for slow cooking, smoking or sous-vide runs you can't stand over.
- Track an 11-hour charge, soak, cure or defrost without watching the clock.
- Time an 11-hour road-trip leg or long-haul study day with a proper break at the end.
- Limit a weekend gaming or streaming marathon to 11 hours.
FAQ
Will it ring if I switch tabs?
Yes. The timer calibrates against your system clock, so it stays accurate even in a background tab. Just don't close the tab.
Do I need to download anything?
No. The timer runs entirely in your browser with no download, signup or plugin.
Can I change the duration?
Yes. Type any hours, minutes and seconds into the fields, or pick a related timer above.
Is it free?
Yes, it is completely free to use.
How many minutes are in 11 hours?
11 hours is 660 minutes, or 39,600 seconds (11 × 60 × 60).
Does a 11 hour countdown stay accurate for that long?
Yes. The countdown is anchored to your device's clock rather than counting ticks, so even across the full 11 hours it stays accurate to the second.
Can I restart the 11-hour countdown when it finishes?
Yes. When the alarm sounds, press Reset and then Start to run the full 11 hours again — handy for repeated rounds.