Free · no signup · browser-local
Full-Screen Classroom Countdown Timer
Set a countdown in minutes and seconds for a timed activity. Choose a background color or image, then start, pause or reset the timer from the projected view.
Set up your activity
Activity preview
Getting started
Set minutes and seconds, choose a background, and open full screen. Start, pause or reset from the projected view.
Before you use the result
Browser sleep and tab throttling can delay the display; verify critical timing separately.
Try an example
Set a two-minute quick write and pause it for instructions.
How it works
Remaining time derives from the wall-clock deadline to avoid interval drift.
Frequently asked questions
Project a full-screen countdown with a color or image of your choice.
How do I use Classroom Timer?
Set minutes and seconds, choose a background, and open full screen. Start, pause or reset from the projected view.
Does this tool upload my data?
Inputs and files are processed in your browser. Page-view analytics do not contain your tool input.
What should I check before using the result?
Browser sleep and tab throttling can delay the display; verify critical timing separately.