Date & Time Tool100% Client-Side
Countdown Timer
Accurate, drifting-free browser countdown timer with Pomodoro presets, custom labels, and desktop chime notification.
05:00
Hours
Minutes
Seconds
How to Use Countdown Timer
1
Set Duration
Enter hours, minutes, and seconds or click a quick preset like 25 min Pomodoro.
2
Start Timer
Click Start; timer uses performance timestamps for millisecond precision.
3
Audio & Notification Alert
Receive alert when countdown completes.
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