3 Hour Timer
Need a 3 hour timer? This one starts the moment the page opens and counts down 180 minutes, second by second. A 3 hour timer works well for study sessions, exams, baking, parking or any task you want to box into a fixed stretch.
Starting your 3 hour timer
How to use the 3 hour timer
Pause and resume
Tap Pause to freeze the clock and Resume to pick up where you left off.
Restart anytime
Restart sets the timer back to the full 3 hour and starts it again right away.
Sound and full screen
Switch Sound on for a short tone at zero, or go full screen so the digits are easy to read from across the room.
3 Hour Timer at a glance
- Length in minutes
- 180
- Length in seconds
- 10,800
- Share of a day
- 12.5%
- Longest custom timer
- 23 h 59 min
Set a different timer or countdown
Other timers
3 Hour Timer questions
How do I start the 3 hour timer?
It starts by itself as soon as the page opens. Use Restart to begin again from the full 3 hour, or Pause to stop the clock.
Does the timer keep running in another tab?
Yes. It measures time against your clock rather than counting ticks, so it stays accurate even when your browser slows background tabs. The sound may play a little late in a hidden tab, so keep the page visible if timing matters.
What happens when the timer reaches zero?
The display stops at 00:00:00, the boxes are highlighted and a message says time is up. If you switched Sound on, a short tone plays too.
Can I set a different length?
Yes. Use Set a timer below to pick any number of hours and minutes, up to 23 hours 59 minutes.