Online Timer
Your latest online timers
When you set and start a timer, its settings (message, sound) for that duration are saved automatically. Your saved timers appear here. Click one to activate it with one click.
About the Online Timer
This online countdown timer counts down a set amount of time and alerts you when it reaches zero. No app—open the page in your browser. Set a timer for hours, minutes, or seconds; when the countdown finishes, the timer rings and you can stop or snooze it. Use it for cooking, exercise, work breaks, study, or meetings. Use the Label and Sound rows on the widget to customize alarm sound and message; use the toolbar to zoom or fullscreen. Last-used timers are saved for quick access.
How to use this online timer
Set the countdown duration, then start the timer. When it reaches zero, an alarm will sound.
- Choose hours, minutes, and seconds for your countdown. You can also pick a preset from the list.
- Optionally use the Label and Sound rows on the widget to add a message and choose a ringtone.
- Click "Start timer" to begin the countdown. The widget shows the remaining time.
- When the timer reaches zero, the alarm rings. You can stop it, snooze it, or edit and set a new timer.
- Use Pause to temporarily stop the countdown, or Reset to clear and set a different time.
- Use the toolbar (top right) to zoom in or out or switch to fullscreen.
Why use an online timer
Countdown runs in your browser—no app. When time is up, an alarm sounds. Use for cooking, Pomodoro, breaks, or power naps. Label and Sound on the widget for message and ringtone; toolbar for zoom or fullscreen. Works on desktop and mobile.
Related time tools
Need to set an alarm? Use the main Online Alarm Clock. Want to measure elapsed time? Use the Online Stopwatch. Need to count clicks or events? Try the Online Counter. Want to check the current time? See the Online Clock.
Frequently asked questions
- Can I set a timer for hours, minutes, and seconds?
Yes. Use the hour, minute, and second fields for any duration. Preset links are available for common durations.
- Will it run if I close the tab? Why didn't it go off?
The countdown only runs while the page is open. Keep the tab active so it can ring when time is up. Closing the tab or device sleep stops it. Test before use and check volume; on mobile, keep the page in the foreground.
- Can I change the alarm sound or message?
Yes. Use the Label and Sound rows on the widget to add a message and choose a ringtone. Settings are saved when you start the timer.
- Can I pause or reset?
Yes. Pause holds the countdown, Resume continues. Reset clears and lets you set a new duration. Use the stop button when the alarm is ringing.
- Are my timer settings saved? Can I bookmark a timer?
Yes. Sound and message are saved per duration. Last-used timers appear in "Saved timers". Each timer page has its own URL—bookmark it and settings load with one click. For multiple timers, open different durations in separate tabs.
- Can I use this as a Pomodoro timer?
Yes. Set a work block or short break, start the countdown, and keep the tab visible. When it rings, take a break or start the next block. Last-used durations are saved.
Popular timer durations
Commonly used countdown timers.