Timers & Management Tools
Free classroom noise meter for teachers. Uses your microphone to show a live traffic-light noise level on the projector — green for quiet, amber for getting loud, red for too loud. No audio is recorded or stored.
Why teachers use it
Use your microphone to show a live traffic-light noise level on the projector. Green means quiet, amber means getting loud and red means too loud — no audio is recorded or stored, and students get instant visual feedback.
Popular classroom uses
Class Noise Meter is a free, no-login timers & management tools tool you can use straight away in class. It works well for lesson pacing, classroom transitions, independent work timing, and runs in any browser on your classroom display, laptop or a student device.
Great for
Use it during
Built to be quick, clear and classroom-friendly so you can get on with teaching.
Designed for interactive whiteboards and projectors, not just a phone screen.
Updates live, which keeps the whole class engaged and involved as it happens.
Keeps timing visible to everyone, which helps pacing and encourages student independence.
It is quick to launch, so you can use class noise meter the moment you need it in a lesson.
It works on classroom computers, laptops, tablets and phones without any installation.
Answers for teachers looking for a fast, reliable classroom-friendly version of this tool.
No. The meter analyses volume in real time but does not record, store or transmit any audio.
Yes. Calibrate the microphone to match your room size and acoustics.
Yes. It works on any device with a microphone and browser.
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