← All Timer Durations
3 Hour Timer Online
Free online 3 hour timer with alarm sound. Press Start - the alarm fires automatically when time runs out.
03
hours
:
00
min
:
00
sec
Customhms
🔔 AlarmOn
Press Start to begin the countdown. Pause at any time and resume from where you left off. The alarm beeps three times when time is up - toggle it off for a silent timer.
Need a different duration? Visit the full countdown timer to pick any preset from 10 seconds to 5 hours, or enter a custom time. For tracking scores during a timed game or match, try the online scoreboard. For a simple click counter without a target, use the tally counter.