Classroom Countdown

About this tool

A countdown timer designed to be readable from anywhere in the room — big digits, a clear color change in the final 10 seconds, and an audible alarm when time's up, so you're not the only one watching the clock. Pick a common preset (1, 3, 5, 10, or 15 minutes) or set a custom time down to the second for anything in between.

Built for timed classroom activities: independent work time, timed writing tasks, group discussion windows, test sections, or transition warnings between activities. Because the display turns gold in the last 10 seconds before the alarm, students get a visual cue to wrap up even if the room's too noisy to hear a verbal warning.

Press Space to start, pause, or resume without touching the mouse. No sign-up, no download, and safe to leave running on a projector or classroom display for the length of a lesson.