3 hour timer
Press Start and an alarm will ring in exactly 3 hours. Good for a long exam, a game night, or slow-cooking.
3 hours is 10,800 seconds (3 h 0 min). The timer keeps exact time in a background tab and shows the time left in the tab title. Press Space to pause, R to reset, F for full screen.
Other timers
Seconds
Minutes and hours
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- 1 hr
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- 2 hr
- 3 hr
Set a custom timer · Stopwatch · Pomodoro timer · Classroom timer