Classroom timer
Big numbersFull screen on the boardAlarm at zero
Time's up
Space to start or pause, R to reset, F for full screen.
Set the time, press Full screen and then Start. The numbers fill the projector or smartboard, so the back row can read them too, and when time is up the timer beeps and the screen says so. Nothing to install and no account.
Presets for class activities
How to run it in class
- Open the page on the computer that’s connected to the projector or board.
- Pick a preset or type the minutes.
- Press Full screen or F, then Start or the space bar.
- Press the space bar to pause if the class needs a minute, and R to reset for the next round.
Good to know
- The timer keeps the end time, not a tick count, so it stays right even if you switch to your slides in another tab. The tab title shows the time left.
- While it runs, it asks the computer to keep the screen on, where the browser supports it.
- Sound needs a click on the page first. Pressing Start takes care of that.
For pre-K and the early grades, the visual timer shows a red disc that shrinks, which kids understand before they can read numbers. For any other length, use the countdown timer.
Questions teachers ask
How do I show the timer on a projector or smartboard?
Open this page on the computer connected to the projector or board, set the time and press Full screen, or F on the keyboard. The countdown fills the whole screen. Press F or Esc to go back.
Will the screen go dark during a test?
While the timer runs, it asks the computer to keep the screen on, where the browser supports it. If the screen still dims, check the power settings before a long test.
Is the alarm loud enough for a classroom?
At zero it plays three short bursts of beeps, about four seconds in all, at the computer’s volume. Turn the speakers up before you start. Browsers only play sound after a click on the page, and the Start button counts.
Can I set up a timer before class?
Yes. Save or bookmark a link with the length in it, like /classroom-timer?m=15 for fifteen minutes. The link sets the time but doesn’t start it, so you press Start when the class is ready.
Is there a timer for younger kids?
Yes. The visual timer shows the time left as a red disc that shrinks, which works better for kids who can’t read a clock yet.
Counting down the days to winter break or the last day of school? Make a countdown to the date.