Classroom timer
A red dial that shrinks as time runs out — pupils see how much is left.
05:00
Quick times
Nothing leaves your device
This tool runs entirely in your browser. What you type, play or record here stays on your device: nothing is uploaded or saved on a server.
Example
Worked example — Classroom timer
Use the following inputs and settings.
- Start
| Item | Value |
|---|---|
| Time (e.g. 5, 1:30, 90s) | 2:00 |
| Output | 02:00 → 00:00 |
Time’s up!
How it works
- Type the time or pick a quick time and press Start.
- The red part of the dial shows the time left and shrinks back to 12; the digits are underneath.
- Press Full screen for the board or projector; a sound tells the class when time is up.
Frequently asked questions
- How is the dial scaled?
- Like the physical classroom timers: up to 60 minutes, a full circle is one hour, so 5 minutes is a small red slice and 30 minutes half the dial. Longer times use a dial of whole hours.
- Why a red dial instead of numbers?
- Young children can’t read the minutes yet, but they see the red getting smaller — it makes the time left visible at a glance, from anywhere in the room.
- Can I add a minute while it runs?
- Yes — press +1 min, and the dial grows to match.
- Is there a noise meter too?
- Yes — the classroom noise meter shows a face that turns red when the class gets too loud.
- Is anything sent anywhere?
- No. The timer runs in your browser.
Made for a specific use
Related tools
⏱ Online timer Set it, start it, hear it ring. ◔ Converters Classroom noise meter Green is fine, yellow is getting loud, red is too loud — on the big screen. ⏱ Sand timer An hourglass on the screen — watch the sand run out. ⚄ Random number generator A fair random number, dice roll or coin flip in one click.