No alarm set.
Choose a time, optionally type a label, and press Set alarm. Leave this tab open with the sound on. When the time arrives the page plays a repeating beep, flashes the screen and shows your label until you press Stop or Snooze. If the chosen time has already passed today, the alarm is set for tomorrow and the page shows how long is left. Your last alarm time is remembered on this device.
Important: a website cannot wake a sleeping or locked device. Keep the screen on and the volume up, and use your phone's own alarm app for anything critical. For a countdown rather than a clock time, use the countdown timer or one of the ready-made timers.
No. A web page can only ring while it is open and your device is awake. Keep this tab open, turn the volume up and stop the screen from sleeping. For an alarm you cannot afford to miss, use your phone's built-in alarm app.
Yes. If the time you pick has already passed today, the alarm is set for that time tomorrow, and the page tells you how long is left.
Browsers only allow sound after you have interacted with the page, so press Set alarm (or Test sound) at least once. Also check that the device is not muted.
See also: Online Clock · Countdown Timer · Online Timers · Pomodoro Timer · Sleep Calculator · All tools