Online Alarm Clock

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Set an alarm for any time with a label, snooze and your choice of tone — it rings right in your browser. Free, no install.

00:00:00
Set an alarm
Tone

Keep this browser tab open for alarms to ring.

Your alarms
Now ringing
00:00

About Online Alarm Clock

The online alarm clock rings in your browser at any time you set — no app or install. Pick the time, add an optional label like “Meeting”, and choose a tone: beep, chime or digital, each synthesized in the browser and previewable before you commit.

You can keep several alarms in a list, toggle each on or off, and delete the ones you no longer need. When an alarm rings you can snooze it for five minutes or dismiss it, and your alarms are saved locally so they survive a page reload.

One practical rule: the tab must stay open for alarms to ring. The page checks the clock continuously, but a closed tab cannot play sound — so pin the tab or leave it running in the background.

How to use Online Alarm Clock

  1. Choose the alarm time, in 24h or 12h format.
  2. Add an optional label and pick a tone — use Preview tone to hear it first.
  3. Press Add alarm; repeat for as many alarms as you need.
  4. Toggle alarms on or off in the list, and keep the browser tab open.
  5. When it rings, hit Snooze (5 min) or Dismiss.

Frequently asked questions

No — the alarm rings from the page itself, so the tab must remain open. Keep it pinned or minimized in the background; the clock is checked continuously while the page is loaded.

Yes, as long as the tab stays open and your device is awake with sound on. Because you interact with the page when setting the alarm, browsers allow the audio to play.

Yes. Add as many as you like — each appears in your alarm list with its own label, tone and on/off switch, so a wake-up alarm and a meeting reminder can coexist.

Yes — alarms and your time-format preference are stored locally in your browser, so refreshing or reopening the page restores the full list on the same device.

Snooze silences the ringing alarm and schedules it to ring again five minutes later. Dismiss stops it outright until its next enabled occurrence.

The beep, chime and digital tones are synthesized live by your browser's audio engine — no sound files are downloaded, and you can preview each tone before choosing.
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