Online Alarm Clock
Set a free alarm in seconds. Keep this tab open and your volume up — the alarm will ring at the chosen time.
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Set alarm
Hours
7AM
Minutes
00
Your alarms
No alarms yet. Set one to get started.
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How to use the online alarm clock
Pick a time, optionally add a label such as "Meeting" or "Take medicine", choose a sound and press Set alarm. When the time comes, the alarm sound repeats and the tab title flashes until you press Stop.
Tips for reliable alarms
- Keep the browser tab open — you can switch to other tabs.
- Turn your volume up and test the sound first.
- Prevent your device from going to sleep.
Need a countdown instead? Try the online timer.
Frequently asked questions
Will the alarm ring if my computer goes to sleep?+
No. Your browser must stay open and the device awake. Plug in your laptop and disable sleep mode for long alarms.
Can I set more than one alarm?+
Yes. Add as many alarms as you like; each can have its own label and sound. They are saved in your browser.
How do I test the sound?+
Choose a sound and press the play button next to it to hear a preview before you set the alarm.