3 Hour Timer
A simple, reliable 3 hours timer. Set it and stay productive.
About the 3 hours timer
Three hours for a full-length practice exam or a slow roast. Press Start and the 3 hours timer counts down 180 minutes or 10,800 seconds, keeps the remaining time in the tab title, and rings when it reaches zero.
Ideas for a 3 hours timer
- Take a full-length practice exam
- Keep track of a slow roast
- Plan a long study block with scheduled breaks
Why use a timer?
- Stay focusedGreat for work, study or exercise.
- Be more productiveBreak large tasks into smaller chunks.
- Reduce stressA clear end time helps you stay on track.
- Works on any deviceUse it on desktop, tablet or mobile.
3 Hour Timer FAQs
Will the alarm still sound after three hours in a background tab?
The countdown stays accurate because it is calculated from the end time. Browsers may delay or mute sound in a background tab, so bring the tab forward near the end or keep it visible.
How do I use the 3 hours timer?
Press Start and the timer counts down from 3 hours. You can pause and resume at any time, or press Reset to start over. When the countdown reaches zero you’ll see “Time’s up!” and, if sound is on, hear an alarm.
How long is 3 hours?
3 hours is 180 minutes or 10,800 seconds.
Will the timer keep running if I switch tabs?
Yes. The countdown is based on your device clock, so the remaining time stays accurate in a background tab and the tab title shows the time left. Browsers may delay sounds in background tabs and cannot play them if the tab is closed or the device is asleep, so keep the page open for important alerts.
Why didn’t I hear the alarm?
Check that the sound button is on and your device isn’t muted. Browsers only allow sound after you interact with the page, which pressing Start does. Some phones silence web audio when the screen locks.