24 Hour Timer
A simple, reliable 24 hours timer. Set it and stay productive.
About the 24 hours timer
A full-day countdown for deadlines, 24-hour fasts and “sleep on it” decisions. Press Start and the 24 hours timer counts down 1,440 minutes or 86,400 seconds, keeps the remaining time in the tab title, and rings when it reaches zero.
Ideas for a 24 hours timer
- Count down to a 24-hour deadline
- Time a 24-hour fast
- Wait a day before a big purchase or a heated reply
- Let paint, glue or a cure set for the full day
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.
24 Hour Timer FAQs
Can a browser timer run for 24 hours?
Yes, as long as the tab stays open. The countdown is based on the end time, so it stays correct while the tab is in the background; only the alarm sound depends on the browser being awake at the end.
How do I use the 24 hours timer?
Press Start and the timer counts down from 24 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 24 hours?
24 hours is 1,440 minutes or 86,400 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.