Countdown Timer

Counts down to a moment or for a duration. A short alert sounds when time is up.

This tool needs JavaScript

The tool runs in your browser, so nothing can be calculated with JavaScript turned off. The rest of the page is still readable.

Until a moment / For a duration Until a moment For a duration

Target date and time

00Days
00Hours
00Minutes
00Seconds

How it works

The countdown runs in your browser and stops if you close the tab. The sound at the end is generated in the browser rather than loaded as a file. Browsers do not allow sound without a user interaction, so the first sound becomes possible the moment you press Start.