Three simple steps
- Set the minutes and seconds.
- Start, pause, or reset the countdown.
- Enter presentation mode for a large distraction-free display.
A clear timer for teaching
Start a classroom timer.
Set a free classroom countdown timer with pause, reset, and distraction-free presentation mode for a projector or shared screen.
Distraction-free classroom timer
05:00
How it works
How to use Classroom Timer
The classroom timer counts down against a target time rather than subtracting once per interval, helping it stay accurate when browser updates are delayed.
Presentation mode
Fullscreen presentation keeps the countdown prominent and contains no advertising placement.
Useful classroom pacing
Use it for independent work, transitions, discussions, quizzes, breaks, or cleanup.
Common questions
Will the timer continue in a background tab?
It calculates remaining time from a target timestamp, so it catches up when the browser resumes updates.
Does the timer make a sound?
The first version uses a visible Time is up message and does not unexpectedly play audio.