Decibel Meter
Measure your microphone signal in real time, directly in the browser. Your audio never leaves this device.
Signal level
dBFS · uncalibrated
Peak
-100.0 dBFS
Privacy
Live samples are analysed in this tab only. No audio recording or upload.
How to use it responsibly
Browser microphones vary by device and may apply hardware processing. Use this meter for indicative monitoring, comparisons, and calibrated practical checks — not legal, occupational-safety, or certified acoustic measurements.
Why did we make it?
Small, private tools are useful when you need a quick answer without installing an app or sending microphone data to a service.
For example: compare cabin noise in your car at different speeds. It is a practical signal when choosing tyres, checking seals, or simply deciding whether a journey feels tiring.