When to use Classroom Timer
Designed for projected classroom or workshop use where the remaining time needs to be visible from a distance.
How to use Classroom Timer
Set the inputs that matter for this task, run the tool, then copy or reuse the result when the page offers that action. Inputs stay visible so you can adjust them and run the tool again without starting over.
Timing behavior
Running time is derived from timestamps rather than counting interval ticks, so the display can correct itself after normal browser throttling.