Fullscreen Timer
A large, readable countdown for rooms, classes, workouts, and presentation screens.
Sounds
Sounds off
Closing these settings keeps sounds playing. Keep this page open.
Ready.
Keep this tab open for the finish sound. Reliability
Session history
Saved only in this browser: up to 90 days and 1,000 records. Timer time includes breaks and does not measure attention. Restored phases are marked. Older daily counters are not converted into sessions.
No sessions in this period.
| Ended | Tool | Phase | Timer time | Result |
|---|
How to use
- Pick a duration or use the 10-minute default.
- Press Start.
- Press the fullscreen button or the F key.
- Press Escape to leave fullscreen when you are done.
Keyboard controls
Click the tool or an empty area, then press a key. Shortcuts pause while you type.
- Start / Pause Space
- Reset R
- Fullscreen F
Quick reference
| Offline | After one successful visit, this route can reopen from the service-worker cache. Keep the tab or installed app open for sound and live state. |
|---|---|
| Browser limits | Fullscreen needs browser support and a user action. Sound still requires the page or installed app to remain available. |
Questions and answers
What keyboard shortcut opens fullscreen?
Can I use it on a projector?
More details and related tools
Built for distance
The fullscreen timer uses oversized tabular digits and a strong progress sweep so it can be read from across a room. It is useful for classrooms, meeting rooms, group workouts, events, and timed presentation sections.
Like the main timer, it counts against the real clock rather than animation frames, so it recalculates cleanly when the browser resumes after throttling a background tab.
Good for
- Classroom activities.
- Meeting breaks.
- Timed presentations.
- Workout or station intervals.