Free classroom tool
Classroom Noise Meter
Show a simple visual volume meter for classroom awareness, with microphone permission only when you start.
Set it up
Press Start to allow microphone access. Audio stays in this browser and is never recorded or uploaded.
Microphone is off.
Preview
Choose your settings and generate a result.
How to use it
Set the options, generate a result, review it, then print if useful. Example: Start the meter, then adjust the colored thresholds until they suit your room and device.
Microphone data stays on this device. The meter shows volume awareness only; it does not record or monitor students.