Skip to the timer
minute·timer

For the whole room

Classroom timer

Five minutes, ready to project. Press Fullscreen and every student can see exactly how long is left, which answers the question before anyone asks it.

Task

05:00

Shortcuts: space start or pause · R reset · F fullscreen. The alarm rings even if you switch tabs.

In short

A classroom timer displays a countdown large enough for a whole room to read, so pupils pace themselves instead of asking how long is left. This page opens at 5 minutes, runs fullscreen on a board or projector, and can run silently.

Default
5 minutes
Quick tasks and transitions
1 to 3 minutes
Group work and reading
10 minutes
Extended writing
15 to 20 minutes
Control
Space bar — works from most presenter remotes

Why a visible timer changes a room

Timed tasks work because of what the class can see, not what the teacher knows. A countdown on the board sets the pace for everyone at once: the pupils who would drift start sooner, the ones who would gold-plate their answer wrap up, and the teacher stops being the clock.

The strip of ticks under the digits is there for the back of the room, where reading exact numbers is hard but noticing that half the bar has gone is not.

Lengths for a lesson

TimeActivity
1 minThink-pair-share, quick recall, packing away
3–5 minStarters, retrieval practice, exit tickets
10 minGroup tasks, station rotations, silent reading
15–20 minExtended writing, practicals, presentations
45–60 minWhole lesson or a full mock paper

Running it from the front

Open the page on the machine driving the board, press F for fullscreen, and use the space bar to start and pause — most presenter remotes send a space key, so you can control it from anywhere in the room. Press Escape to come back out to the slides.

If a task is running short, +1 minute adds time without resetting the countdown or the mood.

Questions about the classroom timer

Can I use it on an interactive whiteboard?

Yes. Any browser on a smart board or projector works, and fullscreen scales the digits to the display size, so it stays readable from the back.

Is there a silent version for exams and quiet work?

Press Sound off and the countdown runs with no alarm at all — the display still shows when it has finished. That is often better during writing tasks.

Will it still work if I lock my phone?

Yes. Locking the screen does not pause anything — the remaining time is worked out from the clock, not from how long the page has been visible. While the timer runs the site also asks your phone to keep the screen awake, so it will not dim on you mid-countdown.

Is there a limit on how many timers I can run?

No. Open the page in as many tabs as you like — each one counts independently and shows its own remaining time in its tab title.