Countdown Timer

Free online countdown timer for teachers. Display a custom timer on your whiteboard with sound alerts and full-screen mode — no download needed.

Why teachers use it

Use countdown timer instantly in class

Set a clear classroom countdown timer for any activity — from two-minute retrieval bursts to full lesson segments. The display stays readable at the back of the room and the alert sound means you do not have to watch the clock.

Popular classroom uses

Time starter tasks, pack-away and transition routines
Set visible countdowns for independent work and exams
Create urgency during speed challenges and quiz rounds

Where countdown timer fits in your lessons

Countdown Timer is a free, no-login timers & management tools tool you can use straight away in class. It works well for lesson pacing, classroom transitions, independent work timing, and runs in any browser on your classroom display, laptop or a student device.

Great for

lesson pacing
classroom transitions
independent work timing
full-screen board display

Use it during

settling the class
timed activities
pack-away transitions
independent practice
plenary wrap-up

What teachers like about it

Built to be quick, clear and classroom-friendly so you can get on with teaching.

Designed for interactive whiteboards and projectors, not just a phone screen.

Keeps timing visible to everyone, which helps pacing and encourages student independence.

It is quick to launch, so you can use countdown timer the moment you need it in a lesson.

It works on classroom computers, laptops, tablets and phones without any installation.

Part of our classroom timers and stopwatches toolkit

Timers and stopwatches for every part of the lesson — countdowns, exam timing, focus sessions and smooth transitions.

Explore more classroom timers

Browse the full classroom timers collection to find more tools for the same kind of lesson or routine.

Countdown Timer FAQ

Answers for teachers looking for a fast, reliable classroom-friendly version of this tool.

Can I change the alarm sound?

Yes. You can pick from a few alert sounds or mute it entirely if you prefer a silent visual cue.

Does it work on a projector?

Yes. The timer is built for full-screen classroom display and stays readable on projectors and whiteboards.

Can I set custom times?

Yes. Enter any duration in minutes and seconds to match your lesson phase or activity length.

Related timers & management tools

Explore more tools from the same area or visit the full category hub for a wider collection.

See all classroom timersVisit the category hub for the full collection of tools in this area.Traffic Light TimerFree traffic light timer for classrooms. Run green, amber and red phases for behaviour routines, transitions, tidy-up time and independent work.Floating Classroom TimerFree floating overlay classroom timer. A minimal strip timer that stays visible on your whiteboard without blocking your lesson content.UK Mock Exam Board TimerFree GCSE mock exam timer for UK teachers. Displays current time, standard finish and +25% extra time simultaneously — professional exam board style.Visual Time TimerFree SEN-friendly visual countdown timer. A disappearing-disk timer for SEND classrooms — reduces anxiety by showing time passing visually rather than numerically.

Read how teachers use this format

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