About this tool

Every teacher needs a countdown at some point — a test, a worksheet, a five-minute cleanup — and this timer puts one on the biggest screen in the room. Choose a preset or set your own time, and the display counts down in numbers large enough to read from the last row of desks, with a sound alert when time's up. If the class needs a few more seconds, it doesn't just stop at zero — it keeps counting into overtime so you can see exactly how far over you went. Start it before a quiz, a silent reading block, or a group task, and let the clock do the reminding instead of you.