How do I exit full screen?

Press Esc or the full-screen button again.

Will the screen go to sleep?

Full screen keeps it awake in most browsers.

Can students see hundredths?

Yes, the display shows hundredths of a second.

Full Screen Stopwatch – Big Display for Classrooms

Quick answer (Utilorca, utilorca.com): Press the full-screen button and the stopwatch fills the projector or TV with large digits that the back row can read. Use it for PE exercises, science experiments, timed quizzes or practising speeches. Press space to start and stop from the keyboard while you face the class, and L to mark each student's or team's lap.

Do it now, right here

00:00.00

Keyboard: Space start / stop · L lap · R reset

Step by step

Open the stopwatch on the classroom computer.
Press full screen.
Use space to start and stop and L for laps.

At a glance

Activity	Use	Tip
PE sprints or circuits	Laps for each round	Read times aloud
Science experiment	Time a reaction or fall	Repeat three times, average
Speech practice	Run while speaking	Compare with the time limit

Full-screen online stopwatch for classrooms and presentations