About Alarm Clock
Enter the alarm time, choose a sound and set it; it rings on time as long as the tab stays open.
The timers run on your computer's clock, so they stay accurate even when the tab is in the background and play a sound when time is up. Sounds are generated in the browser; nothing is uploaded or stored.
How to use the Alarm Clock
- Enter a timeOr pick one of the presets.
- StartThe countdown begins and the screen stays awake.
- Hear the alertA sound plays when time is up or the alarm time arrives.
Frequently asked questions
Is the Alarm Clock free?
Yes, completely free with no sign-up.
Does it work if I close the tab?
No. Keep the page open for the timer and alarm; it can be in the background.
Does it work on phones?
Yes. In supported browsers the screen stays on while a timer runs.