Classroom Timer
A giant countdown for the projector — set the time, press start, and teach. It rings once when time is up.
Type a time, scroll to adjust, or pick a preset
Built for the front of the room
A classroom timer has one job: be readable from every seat and ring when time is up. Set the length by typing on the clock or picking a preset, press Start, and the countdown takes over the screen at the largest size — no menus, no clutter, just a giant clock your whole class can pace against. Press the full-screen button to fill a projector or smartboard edge to edge.
One activity, one countdown — no surprise breaks
Unlike a pomodoro timer, this one does exactly what a teacher expects: it counts down the time you set, rings once, and stops. It never rolls into a break or restarts on its own. Give the class eight minutes for a warm-up, hit reset, give them fifteen for the next task — you stay in control of every transition.
Hands-free timing with a real alarm
When time runs out the clock flashes and an alarm plays, so you hear it while circulating the room or helping a group. Prefer silence? Mute it and rely on the visual finish. The countdown is anchored to a real end time, so it stays accurate even if you tab away to your slides — and the remaining time shows in the tab title. Space starts and pauses, R resets.
Frequently asked questions
- How do I use this classroom timer?
- Type the activity length right on the clock (or scroll to adjust), then press Start. The countdown takes over the whole screen at a giant size the back row can read, and rings once when time is up — no auto-repeat, no forced break. Press R or Reset to set up the next activity.
- Can students read it from the back of the room?
- Yes. The clock scales with the screen and fills a projector or smartboard, with a high-contrast dark background so the digits stay sharp under classroom lights. Press the full-screen button (⛶) to hide the browser chrome entirely.
- Does it ring or just stop?
- It plays an alarm when it reaches zero and flashes the clock red, so you hear it even while helping a student. You can mute the sound with the 🔔 button and rely on the visual finish instead.
- Will it keep time if I switch tabs during the lesson?
- Yes. The countdown is anchored to a real end time, so it stays accurate in a background tab, and the remaining time shows in the browser tab title.
- Is the classroom timer free?
- Completely free — no signup, no account, and no ads. Open it on the board and press start. Keyboard shortcuts: Space starts and pauses, R resets.