25 Minute Timer with Alarm
Press Start and an alarm will ring in exactly 25 minutes. Free, no app, no sign-up.
How to set an alarm for 25 minutes
- Press Start on the 25:00 timer above. The countdown begins immediately.
- Allow notifications if your browser asks, so you also get a pop-up when the tab is in the background.
- Keep your volume on. When 25 minutes are up, the alarm sound plays and repeats until you stop it.
Saying “Hey Google, set an alarm for 25 minutes” works on a phone, but on a laptop it is quicker to keep a 25 minute alarm timer in a browser tab. The countdown is accurate even when you switch tabs, because it is based on the system clock rather than on the tab staying active. When it ends you get both a sound and a notification, so you will notice it over music or a video call.
Alarm time from now
| If you start at | The alarm rings at |
|---|---|
| 9:00 | 9:25 |
| 9:40 | 10:05 |
| 12:15 | 12:40 |
| 14:50 | 15:15 |
| 21:35 | 22:00 |
Tips so you never miss the alarm
- Turn the system volume up before you start; headphones work too.
- Allow browser notifications so a pop-up appears even when the tab is hidden.
- Do not close the tab. Minimising the window or switching tabs is fine.
- Want to test the alarm first? Try the timer with sound page.
- Need background alerts across many tabs? Use the timer with notifications.
FAQ
How do I set an alarm for 25 minutes from now?
Press Start on the timer on this page. An alarm will ring exactly 25 minutes later. There is nothing to install and no account to create.
Will the alarm ring if I switch tabs?
Yes. The countdown keeps running in the background and the alarm sound plays when it reaches zero. If you allow notifications you will also see a pop-up.
Does the 25 minute alarm work on my phone?
Yes, it works in mobile browsers. Keep the browser open and the phone unmuted; some phones pause audio when the screen locks, so for long sessions keep the screen on.
Can I stop or pause the alarm?
Yes. Press Pause at any time, or Reset to start over. When the alarm rings, press the stop button to silence it.
What happens after the alarm?
The timer offers a 5 minute break, following the Pomodoro Technique. You can skip the break or start another 25 minute session.
Is there a 25 minute alarm without sound?
If you need silence, mute the tab and rely on the browser notification and the on-screen countdown instead.