Online Alarm Clock
Set an alarm time and see how long until it rings.
Quick answer: enter your details below and click Set Alarm — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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How to use
- Enter the alarm time as HH:MM.
- Give the alarm a label.
- Click Set Alarm; in the browser, keep the page open until it rings.
About this tool
Enter an alarm time and a label, and the tool tells you how long until the alarm. In the browser, a live check runs while the page stays open and shows a message when the time arrives. It does not ring if you close the page, and it does not send notifications outside the browser.
Frequently asked questions
Can I set an alarm for later today?
Yes. If the time has already passed today, the alarm rolls to the same time tomorrow.
Does it play a sound?
The page shows a clear alarm message when the time arrives. For a guaranteed wake-up, use your phone's alarm as well.