5 Hour Timer
A free 5 hour timer that opens preset to 5 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 5 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 5 hours?
300 minutes is exactly 5 hours — 18,000 seconds in total. That is roughly 20.8% of a 24-hour day. Half of 5 hours is 2 hours 30 minutes, and two rounds back to back add up to 10 hours.
Five hours is about the flight time from New York to Los Angeles.
Things that take about 5 hours
- Cap a 5-hour work shift, freelance block or hackathon sprint with a hard stop.
- Remind yourself to move, drink water or take medication after 5 hours.
- Run a 5-hour quiet-hours window — the alarm tells the household when it's over.
- Set 5 hours for slow cooking, smoking or sous-vide runs you can't stand over.
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 5 hours?
5 hours is 300 minutes, or 18,000 seconds (5 × 60 × 60).
Does a 5 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 5 hours it stays accurate to the second.
Can I pause the 5-hour timer halfway through?
Yes. Press Pause at any point and Start to continue; the remaining part of the 5 hours is kept to the second.