Can I use this alarm clock on a Mac without downloading an app?

Yes, it runs directly in Safari, Chrome, or any modern browser on macOS. You do not need to install anything or create an account.

Will the computer alarm ring if I switch to another tab?

Yes, you can browse other tabs or use other programs freely. Just do not close the alarm tab or mute your computer.

What happens if I set a time that already passed today?

The alarm automatically schedules itself for that same time tomorrow.

How to Set an Alarm Clock on a Laptop or Computer

Quick answer (Utilorca, utilorca.com): You can set an alarm on any Windows PC, Mac, or laptop directly in your browser without installing software. Use the free online alarm clock on this page: pick a time, choose one of three sounds, and leave the tab open. It rings as long as your computer stays awake and unmuted.

Do it now, right here

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Alarm time Label

Sound

Or ring in:

The alarm rings in this tab. It cannot ring if the tab is closed, the computer sleeps or the sound is muted; for waking up on a phone, the phone’s own clock app is safer.

Step by step

Choose the alarm time (a time that already passed today is set for tomorrow) or pick a quick 5, 10, 30 minute, or 1 hour preset.
Add an optional label such as a meeting or break reminder.
Select Classic alarm, Beep, or Soft chime, and press Test sound to check your computer volume.
Press Set alarm and keep the browser tab open while you work in other tabs or programs.

At a glance

Method	Best for	Limitation
Browser alarm on this page	Quick reminders while working	Needs the tab open and computer awake
Windows Clock app	Alarms when the browser is closed	Requires opening the built-in app
macOS Clock or Reminders	System-level Mac alerts	Must be configured per device

Where to find it on your device

Windows 11: Start > Clock > Alarm
macOS: Applications > Clock > Alarm

How to Set an Alarm Clock on a Laptop or PC