Simple Timer - Countdown with Audio Alert and Web Notifications

Set hours, minutes, and seconds for countdown. Plays audio and sends Web Notifications when done.

min
:
sec
00:00

How to Use

  1. Enter hours/minutes/seconds or select a preset
  2. Start button to begin countdown
  3. Audio and Web Notification when done

FAQ

Are preset times available?
Yes. Frequently used time presets are provided.
Does it sound when finished?
Yes. A notification sound plays when the timer ends. Web notifications are also supported.
Does the timer run after closing the browser?
No. The timer stops when the browser tab is closed.
Can the timer be reset?
Yes. Pressing the reset button returns the timer to the set time.
Are both countdown and countup supported?
Yes. Both countdown (from a set time to 0) and countup (measuring elapsed time from 0) are supported.

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Update History

Last Updated: 2026-02-21

  • 2026-02-21 Initial release