Online Alarm Clock

Pick a time, add an optional label and set the alarm. When the time arrives, the page rings with a repeating sound and shows your label. The clock at the top shows your current local time, so you can check it matches what you expect.

The alarm follows the device's own clock, not a server, and nothing you enter is uploaded.

How to use this tool

1. Choose the alarm time in hours and minutes and, if you like, a label such as Meeting.
2. Press Test sound to check your volume. This also lets the browser play sound later.
3. Press Set alarm. The page shows when it will ring and how long that is from now.
4. When it rings, press Snooze 5 min, Snooze 10 min or Stop. Stop also turns the alarm off.

Keep the tab open

A web page can only ring while it is running. If you close the tab, quit the browser or the device powers off, the alarm will not sound, and a web page cannot wake a sleeping computer or phone. Leave the tab open, plug in the device and keep the volume up.

Treat this as a convenient reminder for naps, cooking and meetings, and use your phone's built-in alarm app for anything critical, such as catching a flight.

Time zones and daylight saving

The alarm uses the time zone set on your device. If you travel, check that the clock at the top shows the local time you expect before setting it. If the clocks change overnight, the device clock follows the change, so verify the time when you set it.

Why sound sometimes needs a click

Browsers block sites from playing audio until you have interacted with the page. Press the test button or any other button once after opening the page. Muted devices and some power-saving modes can still prevent sound.