Online alarm clock

Set a time like 07:30 or 7:30 AM — a countdown and a beep, entirely inside this tab.

Keep this tab open — the alarm is a page script, not a system alarm, so it only rings while the tab is alive.

Everything runs in this browser.

How to use

  1. Type the time (24 h or AM/PM).
  2. Set the alarm and keep the tab open.
  3. Stop it when it rings.

What it supports

Accepts 07:30, 18:45, 7:30 AM, and friends; if the time already passed today it rolls to tomorrow. A page timer, not a system alarm — it rings only while this tab stays open, and the beep needs one tap to unlock audio in some browsers.

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