Big countdown
Fullscreen Countdown Timer
A bold fullscreen countdown with presets, alarm controls and optional wake lock. Use Space to start or pause, R to reset and F for fullscreen.
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READY
Countdown controls
Set your timer
How to use
Using Fullscreen Countdown Timer
Open Set Time to choose hours, minutes and seconds or use a quick preset. Start the countdown, pause or restart it at any point, and optionally enable the soft browser generated alarm when time reaches zero.
Useful for
Simple ways to put it to work
- Focused work blocks
- Study and revision sessions
- Workout countdowns
- Classroom and presentation activities
Browser capability note
Read practical timing guides →Fullscreen and screen Wake Lock depend on browser support and require user permission or interaction where the browser requires it. The timing tool itself keeps working when those optional capabilities are unavailable.