Teacher timer

Classroom Timer Online for Teachers

Run a full-screen classroom countdown with sound alerts, quick presets, and visual themes for teacher-led routines.

This free classroom timer works on any device — Chromebook, iPad, or interactive whiteboard. Set a countdown, go full screen, and let the whole class see how much time is left. No account, no downloads, no ads during the countdown.

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How to Use This Classroom Timer

Set it up in under ten seconds: pick a duration, press start, and let the countdown run itself. Here is the whole workflow.

Step 1
Pick a preset or set your own time
Choose one of the quick presets — 5, 10, 15, or 20 minutes — or type any custom duration you need. This classroom timer online supports anything from 30 seconds up to 120 minutes, so short drills and double periods both work on the same page.
Step 2
Press start and go full screen
The countdown begins immediately. Click full screen and the timer fills the entire display, large enough for students in the back row to read at a glance without squinting at a phone.
Step 3
Hear the alert when time is up
A clear sound plays the moment time runs out, so you can keep teaching instead of watching the clock — no more turning around mid-lesson to check whether a phone timer has finished.
Step 4
Reset and go again
One click resets the countdown to your last duration, so running back-to-back classroom timers — centers, then reading, then a brain break — takes zero extra setup.

Why Teachers Choose This Timer

Every feature exists for one reason: keeping a class on schedule without the teacher playing timekeeper.

Full screen mode that actually works
The countdown fills the display, so a visual timer for classroom use is readable from every seat in the room, including the back row.
No ads during the countdown
Nothing pops up over a running timer to interrupt a test, a transition, or a read-aloud.
Works on any device
Chromebook, iPad, Windows laptop, or interactive whiteboard — if it has a browser, it runs. There is nothing to install.
No account required
Open the page and start. No sign-up, no email, no app store, and no district IT approval needed.
Five display themes
Digital, hourglass, clock, progress bar, or candle — pick the countdown style your class responds to and change it between activities.
Built around real lesson timing
The presets match the routines teachers actually run: transitions, centers, reading blocks, quiet work, and brain breaks.

Classroom Visual Timer vs. a Traditional Timer

A regular digital timer only shows numbers. A classroom visual timer shows time shrinking — the display visibly empties as the end approaches. For younger students and English learners who cannot read numbers quickly, that visual cue is the difference between “I know how much time is left” and “what time is it?”

Students see time passing without having to read digits.
The shrinking display signals “wrap up” before the alert even sounds.
Fewer “how much time is left?” interruptions — the answer is already on the screen.
Works for every grade level, from kindergarten centers to high school exams.

This timer gives you both: a large numeric countdown and a clear visual indicator, with five display themes — digital, hourglass, clock, progress bar, and candle — so every student gets the cue they need. Prefer a dedicated ring-style countdown? Open the visual timer.

Popular Preset Timers

Need a fixed countdown for a routine? Every preset duration has its own page with ready-made use cases:

1 minute timer 2 minute timer 5 minute timer 10 minute timer 15 minute timer 20 minute timer 25 minute timer 30 minute timer 45 minute timer 60 minute timer

Running different durations for different groups at the same time? Open the multiple timers tool to run several countdowns side by side, one per group or station.

Classroom routines the timer supports

Built for the moments that make a lesson flow — a shared visual countdown makes routine changes predictable without interrupting instruction.

Transitions

Give students a visible countdown for packing up, changing activities, or moving between classroom spaces.

Centers

Set one shared countdown for station rotations so every group can see when it is time to switch.

Reading Time

Keep independent reading or a short read-aloud block on schedule with a clear visual timer.

Quiet Work

Use a calm visual countdown for writing, independent practice, or focused work without repeated reminders.

Brain Breaks

Use a short preset timer for a movement break, reset activity, or quick class game.

Classroom Timer FAQ

Is this classroom timer free to use?

Yes. Open the timer in any modern browser and start a countdown — no account, no payment, and nothing to download.

Does the timer work on an interactive whiteboard?

Yes. Open the page in the whiteboard's browser and click full screen. The countdown is large enough for the whole class to read from their seats.

Does the timer work without internet?

You need an internet connection to load the page. Once loaded, a countdown keeps running on its own, so keep the tab open for the duration of your lesson.

How is this different from a phone timer?

A phone timer is small, personal, and easy to miss. This classroom timer online is built to be shared: a full screen display, a clear alert sound, and a countdown visible from the back of the room.

Can I run multiple classroom timers at once?

Yes. Open the multiple timers tool to run several countdowns side by side — one per group, station, or rotation.

What's the maximum time I can set?

Up to 120 minutes, which covers a full double period or a long testing block. For shorter drills, set custom seconds down to the second.

Does the alert sound work when the device is muted?

The alert plays through the device speakers, so a muted device stays silent. The visual indicator still shows exactly when time is up, which is why many teachers keep it visible.

Is there a visual countdown option?

Yes. Choose from five display themes — digital, hourglass, clock, progress bar, and candle — so students can read the remaining time whichever way is easiest for them.