Online Alarm Clock
Set one or more named alarms for today. This tab needs to stay open for the alarm to ring.
A free alarm clock in your browser
Pick a time, optionally give it a label like "Coffee break" or "Call with Sam", and press Add Alarm. You can set as many alarms as you like, toggle any of them off without deleting it, and remove ones you no longer need. When an alarm's time arrives, it plays a tone and highlights in the list.
Because this runs in your browser rather than as an app, the tab needs to stay open (background execution is not guaranteed) for the alarm to fire — closing the tab or shutting your browser will stop it from ringing.
Do I need to keep this tab open?
Yes — since there's no app running in the background, the alarm can only ring while this page is open in your browser, and the browser permits execution and audio.
Can I set more than one alarm?
Yes, there's no limit. Add as many as you need and toggle each one on or off independently.
Does it repeat daily?
No, each alarm fires once for the next matching time of day. Add it again if you need it for another day.
Test an alarm before relying on it
Create an alarm a few minutes ahead, keep the page visible and verify that your speakers play its tone. Alarm names and times are saved in this browser’s local storage, so another device will not automatically receive them. Clearing site data removes saved alarms.
An enabled alarm is matched against the current local hour and minute while this page runs. It is not a push notification and does not wake a closed browser or sleeping computer. If the browser is suspended for the whole target minute, an alarm can be missed. Check both device time and audio settings; use a dedicated alarm for essential reminders.