USATimeFullscreen

Online Alarm Clock

Set a free alarm directly in your browser. Choose a time, give it a label, and keep this tab open — you'll get a sound alert and, if you allow it, a browser notification when it goes off.

Keep this tab open for the alarm to ring — browsers can't fire sound while a tab is fully closed.

Frequently asked questions

Do I need to install an app to use this alarm?

No — the alarm runs entirely in your browser tab using the Web Audio API, so there's nothing to install and no account to create.

Will the alarm still ring if I close the tab?

No, the tab needs to stay open (it can be in the background) for the alarm to trigger its sound and notification at the set time.

Can I set more than one alarm?

Yes — add as many alarms as you need, and toggle each one on or off individually without deleting it.

Does the alarm use my time zone?

Yes, it uses your device's local clock and time zone, so the time you set is the time it will ring in wherever you are.