Set a free browser alarm clock with quick alarm times, a test sound button, and a shareable alarm link.
Free online alarm clock
Set one browser alarm for a local time, test the sound, and keep the alarm visible on desktop, tablet, or mobile screens.
- Use quick morning times or short offsets for reminders
- Copy a clean link that keeps the alarm time and label
- Keep the page open and test sound before relying on it
Prepare the alarm before you walk away
Use this online alarm clock as a visible browser reminder while the tab stays open. Confirm audio and power settings before using it for a deadline.
- Press Test sound once after changing browser, device, or headphone audio settings
- Keep the ClockHub tab open and prevent the device from sleeping
- Use a native alarm app for wake-up alarms, medication, travel, or anything safety-critical
Honest browser limits
ClockHub does not promise closed-tab, sleeping-device, or background notification alarms. Use a native alarm app for safety-critical wake-up alarms.