Timer and Alarm
Set a countdown timer or an alarm for a time of day, with sound.
Enter a time longer than 0 seconds.
Keep this tab open for the sound to play. Phones may not play it when the screen is off.
No alarm set
Keep this tab open for the sound to play. Phones may not play it when the screen is off.
Timer and Alarm
This page has two tools in one: a countdown timer that rings when the time runs out, and an alarm that rings at a time of day. Both play a sound in this browser, with nothing to install and no account.
The sound is scheduled in advance at the exact moment it should play, so it stays on time even when you switch to another tab.
How to use
- For a countdown, type hours, minutes, and seconds, or click a quick time, then click Start. You can pause and resume at any time.
- For an alarm, open the Alarm tab, choose a time and a sound, and click Set alarm. If the time has already passed today, it rings tomorrow.
- When it rings, click Stop sound, or Snooze 5 min for the alarm. Keep the tab open until then.
Why web timers can run late in a background tab
To save battery, Chrome checks timers on hidden pages once per second. If a page has been hidden for more than 5 minutes and silent for at least 30 seconds, it may check them only once per minute.
A timer that counts down with ordinary JavaScript timers can therefore ring up to a minute late. This tool hands the sound to the audio system ahead of time, which is not delayed this way, so the countdown text may update late but the sound plays on time.
FAQ
Will the alarm ring if I close the tab?
No. The sound plays from this page, so keep the tab open. Closing the browser or letting a phone sleep can stop it.
Why is there no sound?
Check that your device is not muted and the volume is up. Click Play sound to test it before you rely on it.
How long does it ring?
Up to 2 minutes, unless you stop it sooner.
Is anything saved or sent?
No. Times stay in this browser and nothing is sent to a server.