About the Countdown Timer
Set a countdown in hours, minutes and seconds or pick a preset. The timer keeps accurate time even if the tab is in the background, and plays a sound when it ends.
Countdown Timer
A simple online countdown timer with presets, alarm sound and full-screen display.
- Pick a date and time
- Watch the countdown
- Share the link
Runs in your browser. Your data and files never leave your device.
Frequently asked questions
Will the timer keep running if I switch tabs?
Yes. It’s based on the clock rather than counting ticks, so it stays accurate. Keep the tab open for the sound to play.
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