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Online Alarm & Timer

Set alarms and timers right in your browser — no app needed

00:00:00
Set your timer
Quick Set
00:00:00
Current time
Alarm Sound
🔊 Volume 70%
FAQ
Does the alarm work if I close the tab?
The alarm needs the tab to stay open to trigger. Keep this page open in the background for the alarm to sound at the set time.
Can I use this as a timer?
Yes. The tool includes both an alarm (set a specific time) and a countdown timer (set a duration like 10 minutes).
Why isn't the sound playing?
Most browsers require a user interaction before playing audio. Click anywhere on the page first, and ensure your device volume is on.
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How to Use the Online Alarm & Timer

CalcsTool Online Alarm Clock lets you set alarms and countdown timers directly in your browser. Whether you need a quick cooking timer, a study session countdown, or a wake-up alarm while working with headphones, this tool works without installing any app.

Choose from 6 different alarm sounds, adjust the volume, and set your preferred time. The alarm will ring even if you switch to another browser tab. For best results, keep the tab open and make sure your device volume is turned up.

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