Event & Time
Online Alarm Clock
Set a browser alarm and test the sound before you rely on it.
Browser alarm
17:19
Alarm is not set
Keep this tab open and prevent your device from sleeping. Browser alarms cannot ring after the browser or device is closed.
Common questions
Good to know
Will it ring if my computer is asleep?+
No. Browser alarms cannot reliably wake a sleeping or powered-off device.
Can I set an alarm for tomorrow?+
Yes. If the selected time has already passed today, the alarm is scheduled for the next day.
More tools
View all event & time toolsPrivacy and quick tips +
This tool runs in your browser. Your input is not stored or sent to us.
- Always use Test sound first.
- Keep your device awake and volume enabled.
- Do not use a browser alarm for safety-critical reminders.