Classroom Timer

Big digits for the back row, teacher presets, a silent mode and a message that appears when time is up.

classroom timer
10:00
Ends at … if you start now
Space start or pause · R reset · F full screen
Settings: sound, repeat, beeps and more

Built for a whole room to see

Tap a preset of 1, 5, 10, 15, 20 or 30 minutes and put the page on the projector in full screen. The digits are very large so students at the back can read them. The page asks the screen to stay awake while it runs, so the display does not dim in the middle of an activity.

Silent mode swaps the sound for a flashing screen, which is quieter during tests or when other classes are next door. You can also type a message such as "Pens down" or "Tidy up". It replaces the plain zero when the time ends.

Exam mode shows a banner at the halfway point and again with 10, 5 and 1 minutes left. Your layout, presets and message are saved in this browser only. Some browsers clear site storage after a long period of non-use, so Copy link also keeps the setup if you need to restore it.

Questions about this timer

Can it be silent?

Yes. Silent mode flashes the screen at the end instead of playing a sound.

Are my settings saved?

Presets and the end message are stored in the browser only. If the browser clears site data, open your Copy link and the setup returns.

Will the screen go to sleep during a long exam?

The page asks the screen to stay awake while running. Browser support varies, so also check your device power settings.

Can students see how far through the exam they are?

Exam mode shows banners at the halfway point and with 10, 5 and 1 minutes left.

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Last reviewed 28 October 2026Made by The TimeToolSet team.