Fullscreen Countdown Timer
A focused countdown timer with fullscreen mode.
Set the duration
Good to know
- Time is anchored to an absolute timestamp, so it stays accurate even if the tab throttles.
- Pause keeps the remaining time; Reset clears everything.
- On iOS, fullscreen works from the button — Safari may require a tap first.
Fullscreen countdown
Countdown
05:00
Ready
Fullscreen shows only the clock — ideal for workouts, talks or study blocks. The timer keeps running while paused elsewhere in the tab; screen wake lock is requested when your browser supports it.
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