Set multiple alarms with custom labels directly in your browser. No app, no sign-up, no installation. Just open GlowClock, click Alarm, and you're done.
Keep the browser tab open and your device volume on. GlowClock will sound a clear audio alert when your alarm time arrives, even if you've switched to another tab.
Set as many alarms as you need simultaneously. Each alarm shows its time and label in a clear list.
Add a label to each alarm so you always know what it's for — "Meeting", "Medicine", "Lunch break" and so on.
Your alarms are saved in your browser's local storage. They persist if you refresh the page — no account needed.
Click the alarm notification or the dismiss button to silence the alert. Delete any alarm from the list at any time.
Phone, tablet, laptop or desktop — GlowClock's alarm clock works in any modern browser on any device.
Use the alarm with GlowClock's amber Sleep & Night Clock mode as a gentle bedside alarm.
Online alarm clocks are popular with people who work at a computer and want to set reminders without reaching for their phone. Common use cases include: time-boxing work tasks, medication reminders, cooking timers, meeting alerts, pomodoro session boundaries, and wake-up alarms on a laptop or tablet.
Unlike phone alarms, a browser-based alarm clock keeps the reminder connected to your work context. You can see it on screen, it integrates with the same tab as your countdown timer and stopwatch, and it doesn't pull you to a different device.
GlowClock's alarm works entirely from your browser — no permissions, no notifications setup, no account. Just a time and a sound.
Browser-based alarms require the browser to be running and the device to be awake. If your device locks or goes to sleep, the browser tab may be suspended and the alarm may not sound. For wake-up alarms, keep your device plugged in and set display sleep settings to longer than your alarm duration.
Yes. GlowClock works in mobile browsers. Open glow-clock.com in Chrome or Safari on your phone, go to the Alarm tab and set your alarm. Keep the browser open and screen awake for the alarm to function reliably on mobile.
No. You can set as many alarms as you need. All alarms are stored in your browser's local storage and displayed in a list.
GlowClock uses a clear, distinct tone generated by the Web Audio API. The alarm repeats until dismissed, ensuring you don't miss it.
Free browser alarm clock. No download, no sign-up.
⏰ Open Alarm Clock — Free