Online Alarm Clock
Add as many alarms as you need, each with its own time, label, sound, recurring weekdays and snooze length. Toggle alarms on or off, edit or delete them, and the page shows the next ring time. Recurring alarms re-arm automatically; one-shot alarms switch off after they ring. Everything is saved locally in your browser.
Your alarms are stored locally in your browser. Nothing is uploaded to a server.
How to use this alarm clock
- Click Add alarm and pick the time you want it to ring (24-hour format).
- Optionally type a label, pick a sound, snooze duration and tick the weekdays for recurring alarms.
- Enable or disable alarms with the toggle. The next ring time and countdown show under each alarm.
- When an alarm rings, click Stop to silence it, or Snooze to delay by the chosen number of minutes.
Frequently asked questions
Will the alarms still ring if I close the tab?
No. The alarm clock runs in your browser, so the tab needs to stay open. Browser notifications still fire from a backgrounded tab as long as it is not closed.
Can I set multiple alarms at the same time?
Yes. Add as many alarms as you like. Each one has its own time, label, sound, recurring weekdays and snooze duration. Disabled alarms stay in the list but do not ring.
How do recurring alarms work?
Tick the weekdays you want the alarm to ring. The alarm re-arms automatically for the next matching day and stays enabled. Leave all weekdays unticked for a one-shot alarm that disables itself after ringing once.
Are my alarms saved if I reload the page?
Yes. Alarms are stored in your browser's localStorage on this device. Nothing is uploaded. Clearing site data will remove them.
Does it work offline?
Yes. Once the page is loaded, the alarm clock runs entirely in your browser — no internet connection needed for the countdowns or the sounds.
Why didn't I hear a sound?
Most browsers block audio until you interact with the page. Click anywhere first or use Test sound when adding an alarm — the sound will then play when the alarm triggers.