Free Classroom Timer & Full Screen Clock

A massive, distraction-free countdown timer for smartboards, projectors, and focus sessions.

Tap directly on the numbers to edit the time!
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Quick Preset:

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Full Screen Classroom Timer & Projector Clock

Need a reliable way to track time? The AlhazApp Online Timer features a massive, full screen display designed specifically for classroom smartboards, projectors, and personal Pomodoro focus sessions.

Teaching a Class? Try the Digital Dashboard!

Upgrade your smartboard with our free Classroom Screen app. It includes this timer, plus a whiteboard, noise monitor, random name picker, and customizable themes all in one place!

Open Classroom Screen

How to Use Your Visual Timer

  1. Set Time: Click directly on the large numbers to type your exact hours, minutes, and seconds, or select a quick preset from the dropdown.
  2. Start: Click the "Start" button to begin the countdown.
  3. Expand: Click the expand icon in the top corner to enter full-screen mode for a distraction-free, dark-background view.

Common Uses for Teachers & Organizers

  • Classroom Smartboards: Run timed quizzes, reading intervals, or group activities seamlessly so every student can see the remaining time.
  • Pomodoro Focus & Studying: Use the classic 25-minute sprint technique to stay laser-focused on your work without distractions.
  • Debates & Events: Keep speaking turns strict and fair during debate tournaments, presentations, or trivia nights.
  • Background Accuracy: A loud, clear alarm ensures you never miss the end of the countdown, even if you are browsing other tabs.

Frequently Asked Questions

Will the timer still run if I switch to another tab?
Yes, the timer continues counting down accurately in the background. The audio alarm will still sound when the time is up, even if you are browsing another website.
How do I use this on a classroom projector?
Click the "Expand" icon in the top corner of the timer. This hides all menus and makes the numbers massive on a dark background, perfect for projectors.
Can I set a custom time instead of the presets?
Absolutely. Just click directly on the hours, minutes, or seconds on the large display to manually type in your exact custom time.