Classroom Timer

A countdown timer for lessons and activities.

How it works

1. Set the time you need in minutes and seconds.
2. Click Start to begin the countdown.
3. Pause or reset it at any time.
4. Use it to time activities, tests or break times.

Frequently asked questions

Can I pause the timer?

Yes — pause and resume whenever you need, or reset it to start again.

Can I time a short activity?

Yes — set any length, from a 30-second warm-up to a full lesson.

Do I need an account to use it?

No — it is free, with no sign-up, and runs entirely in your browser.

What is the Classroom Timer?

The Classroom Timer is a countdown timer for lessons and activities, with a sound when time is up. Set the minutes for your activity, click Start Timer, and the big display counts down to 00:00 — then it shows 00:00 and plays a sound so the whole class hears that time is over. You can pause any time with Pause, and start again with Resume.

It is made for teachers who need the class to see the time, not just hear about it. The display is big enough to read from the back of the room, so students pace themselves instead of asking how long is left. The timer runs from 1 to 180 minutes — three hours at most — and it lives only while the page is open, so closing the page stops it. Keep the tab visible and your sound on, or the bell may not be heard.

What you can use it for

Here are the moments it is most useful.

• Timed classwork: Ten minutes for a worksheet, timer on the board — students can see exactly how long they have and finish on time without reminders.
• Exam practice: Set the real exam length, up to three hours, so students learn what the full paper feels like under timed conditions.
• Group work rotations: Five minutes per station, then the bell sounds and every group rotates to the next station together.
• Transitions and tidy-up: Two minutes to pack away, books in bags and chairs pushed in — the sound marks the end, not the teacher’s voice over the noise.

Good to know

• Keep the tab visible: The timer keeps counting in most browsers, but a background tab may silence the sound — keep the tab on screen for the bell.
• Check your sound before the lesson: The bell only works if your device sound is on and the volume is up, so test it once before the class arrives.
• Pause if the class needs a minute: Press Pause when an interruption eats into the time, then Resume when the class is ready to carry on.
• Up to 180 minutes: For anything longer, let it finish and start it again. For quiet work, pair it with the Classroom Noise Level Meter or the Digital Classroom Traffic Light; for a Pomodoro-style study session, use the Study Timer instead.

Can I use it as a stopwatch that counts up?

No — it counts down only. Set the minutes for the activity and it runs down to 00:00. If you need to time how long something takes, note the start time on the clock and check it again when the work finishes.