Online Alarm Clock
Set an alarm for a time of day, give it a label and a tone, and it rings when the clock gets there. Switch between a 12 or 24-hour clock, set the volume, and snooze when it goes off. The live clock counts down as you wait.
Set an alarm for a time of day, give it a label and a tone, and this online alarm clock rings when the clock reaches it. Switch between a 12 or 24-hour display, choose the volume, and snooze for 5, 10 or 15 minutes when it goes off. The live clock counts down to your alarm while you wait, so keep the tab open to hear it.
- 100% free
- No sign-up
- No clutter or popups
- Works offline
- Accurate & distraction-free
Your timer keeps running and the alarm sounds as long as this tab stays open.
Set an alarm for a specific time
How it works
- 1
Pick the time
Set the hour and minute, choose a tone, and add a label like Wake up if you want one.
- 2
Set the alarm
Arm it and the live clock counts down to your time. Keep the tab open so it can ring.
- 3
Stop or snooze
When it rings, stop it or snooze for 5, 10 or 15 minutes, whichever you picked.
Great for
- ✓ A quick nap or rest timer
- ✓ A reminder at a set time of day
- ✓ A backup alarm at your desk
- ✓ Cooking or laundry that finishes at a known time
No clutter, no popups, no waiting
This tool runs entirely in your browser, so it starts instantly and keeps working offline once the page has loaded. There is no sign-up, no popups fighting for your attention, and nothing is sent anywhere. Add it to your home screen and it opens like a real app.
Frequently asked questions
- Will it ring if my computer is asleep?
- The alarm relies on the browser tab staying open and the device awake, so it is best for times when you are nearby with the page open. For waking from deep sleep overnight, a dedicated phone alarm is more dependable.
- Why do I need to interact before setting it?
- Browsers only allow sound to play after you have interacted with the page, which is what arming the alarm does. That single tap unlocks audio so the tone can ring when the time comes.
- Can I use a 12-hour or 24-hour clock?
- Both. Switch between 12-hour with AM/PM and 24-hour time with one tap, and the choice is remembered for next time.
- How long is a snooze?
- You choose: 5, 10 or 15 minutes. Snooze re-arms the alarm for that long, then it rings again. You can stop it for good at any point.
- Can I set an alarm for a specific time like 7 AM?
- Yes. The set-alarm-for pages give you a one-tap alarm at any half hour, such as 7:00 AM, and each one also suggests when to fall asleep.
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