Classroom Stopwatch
The Classroom Stopwatch is a free online stopwatch for lessons and activities. Start, pause, record laps and reset, all with big digits that are easy to read from the back of the room.
Classroom Stopwatch
Free for teachers, no signup
Lap times
No laps yet. Press Lap while the stopwatch is running.
Tip: project this page on your classroom screen. Press Fullscreen for a big distraction-free display. Everything runs in your browser, nothing is uploaded.
How to use the stopwatch
- Press Start to begin timing.
- Press Lap to record split times without stopping.
- Press Reset to clear, or go fullscreen for the projector.
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Frequently asked questions
How do I start the classroom stopwatch?
Just press the Start button. Pause and Reset are right beside it.
Can I record lap times with the stopwatch?
Yes. Press Lap while it is running to record split times, which stay listed below the display.
Does the stopwatch work in fullscreen?
Yes. Click the fullscreen button to fill your projector screen, then press Esc or click the button again to exit.
Is the online stopwatch free?
Yes, it is completely free to use, with no signup and no limits.
Does it work on a smartboard?
Yes. It works in any modern browser, including smartboards and interactive whiteboards.