Can I set a timer for hours, minutes, and seconds?

Yes. Use the hour, minute, and second fields for any duration. Use preset links for common durations.

Will the timer run if I close the tab? Why didn't it go off?

The countdown only runs while the page is open. Closing the tab or putting the device to sleep stops the timer. Keep the page visible and check your volume. On mobile, keep the page in the foreground.

Can I change the alarm sound or message?

Yes. Use Label and Sound on the widget to add a message and choose a ringtone. Settings save when you start the timer.

Can I pause or reset?

Yes. Pause holds the countdown, Resume continues. Reset clears the timer so you can set a new duration. Use the stop button when the alarm is ringing.

Are my timer settings saved? Can I bookmark a timer?

Sound and message save per duration. Last-used timers appear in "Saved timers". Each timer page has its own URL — bookmark it and settings load with one click. Open different durations in separate tabs for multiple timers.

Can I use this as a Pomodoro timer?

Yes. Set a 25-minute work block, start the countdown, and keep the tab visible. When the alarm rings, take a break or start the next block. Last-used durations are saved.

Online Timer

Label

Set a timer for any duration — hours, minutes, or seconds. The alarm rings when time is up. No app needed.

Works in any browser on desktop and mobile.

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 countdown timer counts down and alerts you when it reaches zero — no app needed. Set a timer for hours, minutes, or seconds. When the countdown finishes, the alarm rings and you can stop or snooze it. Use it for cooking, exercise, work breaks, study, or meetings. Use Label and Sound on the widget to set the alarm sound and message. 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, the alarm sounds.

Choose hours, minutes, and seconds for your countdown, or pick a preset from the list.
Use Label and Sound on the widget to add a message and choose a ringtone (optional).
Click "Start timer" to begin. The widget shows the remaining time.
When the timer reaches zero, the alarm rings. Stop, snooze, or set a new timer.
Use Pause to stop the countdown, or Reset to clear and set a different time.
Use the toolbar (top right) to zoom or switch to fullscreen.

Free Online Timer – Set a Timer for Any Duration

Why use an online timer

Runs in your browser on desktop and mobile. Use it for cooking, Pomodoro, breaks, or short naps. Use Label and Sound on the widget to set a message and ringtone. Use the toolbar to zoom or go fullscreen.

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. Use preset links for common durations.
Will the timer run if I close the tab? Why didn't it go off?: The countdown only runs while the page is open. Closing the tab or putting the device to sleep stops the timer. Keep the page visible and check your volume. On mobile, keep the page in the foreground.
Can I change the alarm sound or message?: Yes. Use Label and Sound on the widget to add a message and choose a ringtone. Settings save when you start the timer.
Can I pause or reset?: Yes. Pause holds the countdown, Resume continues. Reset clears the timer so you can set a new duration. Use the stop button when the alarm is ringing.
Are my timer settings saved? Can I bookmark a timer?: Sound and message save per duration. Last-used timers appear in "Saved timers". Each timer page has its own URL — bookmark it and settings load with one click. Open different durations in separate tabs for multiple timers.
Can I use this as a Pomodoro timer?: Yes. Set a 25-minute work block, start the countdown, and keep the tab visible. When the alarm rings, take a break or start the next block. Last-used durations are saved.

Popular timer durations

Commonly used countdown timers.