Classroom Timer

How to use the classroom timer

This classroom timer is built to be projected: very large digits and a progress bar that students can read from the back row, activity presets for common lessons, and a custom "time's up" message on screen when the countdown ends. It is free, runs in any browser and needs no sign-up, so it is ready on your smartboard in seconds.

Get it on the board

1. Open this page on the computer connected to your projector, smartboard or classroom TV.
2. Pick an activity preset or type a custom time.
3. Choose a display style – big digits, visual disc or progress bar – and a color theme that reads well in your room.
4. Edit the "time's up" message, for example "Pencils down, eyes up front."
5. Press F for full screen and Space to start. Space again pauses; R resets.

Classroom timer presets for common activities

Instead of punching in numbers in front of 28 students, tap the activity:

Every preset can be adjusted, and anything else – a 7 minute warm-up or a 25 minute writing block – is a custom time away.

Choosing a display style

• Big digits work best for older students and timed work, where exact minutes matter.
• Visual disc suits younger grades. A shrinking colored disc is a classroom visual timer that pre-readers understand without reading numbers.
• Progress bar is unobtrusive. Park it on screen next to a slide or instructions and students still see how much time is left.

Color themes help with contrast on washed-out projectors, and you can match a color to an activity so students recognize "reading time" before you say a word. For K–2, a dedicated visual timer with a kid-friendly big display is another option.

Classroom management tips for using a timer

A timer on the board is only as useful as the routine around it. Practical habits that make it work:

• State the expectation before you press start. "You have 10 minutes to finish questions 1–5 with your group. When the timer ends, one person from each group shares." The timer then enforces a plan everyone already heard.
• Give a verbal one-minute warning. A quick "one minute left, wrap up your last thought" helps students finish instead of being cut off mid-sentence.
• Use the same timer for the same transitions. If clean-up is always the 5 minute preset with the same message, students learn the routine and you repeat yourself less.
• Let the end message do the talking. "Eyes on me" or "Line up quietly" on screen means you don't have to shout over the room.
• Pause, don't reset, for interruptions. When the intercom or a fire drill hits, press Space and resume afterward so students get the full time they were promised.
• Keep the tone positive. Treat the timer as a fair, shared clock rather than a threat. For review games where you want extra excitement, the bomb timer adds a cartoon fuse and countdown beeps.

Why teachers use an online classroom timer

• It keeps time against the computer's system clock, so it stays accurate even when you switch to your slides or gradebook. The remaining time also shows in the browser tab title.
• The screen stays awake while the timer runs, where the browser supports it, so the projector doesn't drift into sleep mode mid-activity.
• Pick from 10 alarm sounds – Bell or Success for a gentle end, Announce for a noisy room – or mute for a silent countdown during testing.
• Your last time and sound are remembered on that computer. No student or teacher accounts, and no ads popping up on the big screen.

Honest limits: the alarm only plays while this page is open in a browser tab, and on iPads you may need to tap the screen once before sound will play. For formal exams with reading time and 30/10/5 minute warnings, use the exam timer instead.

Classroom timer FAQ

Can I change the "time's up" message?

Yes. The message is editable, so you can show anything from "Switch stations" to "Bring your exit ticket to the door" when time runs out.

Will it work on my smartboard or projector?

It runs in a web browser, so if your classroom computer can open a web page, it can show the timer. Use full screen for the biggest possible digits.

Can I run the timer and show my slides at the same time?

The timer keeps accurate time in a background tab and the countdown appears in the tab title, but the big display is only visible when the timer is on screen. Many teachers keep it on a second display or switch back to it for the final minutes.

Is this class timer free for teachers?

Yes. It is free with no sign-up and no ads, so you can use it every period without a school account.