Free Online Alarm Clock

Set an alarm in your browser for any time. Simple, reliable, and free.

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A free alarm clock that lives in your browser

ZaynClock's alarm is for the moments you don't want to fish around for your phone. Maybe you're cooking and want a 6:30pm reminder to take the lasagna out. Maybe you're working from home and need a hard stop at 5pm. Maybe you just want a quiet little pinger to tell you when to get up from the desk and stretch.

Add an alarm, give it a label, and forget it. The page persists your alarms in this browser, so closing the tab and reopening it later is fine — they'll still be there. When the moment arrives, a soft chime plays and the alarm card clearly shows whether it is active and how long remains.

Pair the alarm with our Countdown Timer for short tasks, our Pomodoro Timer for focus sessions, the World Clock for international scheduling, or the Stopwatch when you need to measure elapsed time.

Keep this page open and keep your browser and device awake when you need to hear an alarm. Browser alarms may not sound while a computer or phone is completely asleep, suspended, powered off, or when browser audio is blocked. Use a device alarm as a backup for anything critical.

Frequently Asked Questions

The alarm rings as long as the browser tab is open and the device is not fully asleep. For mission-critical wake-ups, also set a backup alarm on your phone.