Free Tool
Measure the noise level in your environment using your browser's microphone. See real-time decibels with min/max/average tracking.
Click to start measuring. Your microphone audio is processed locally — nothing is recorded or sent anywhere.
Common sounds and their approximate decibel levels. Prolonged exposure above 85 dB can cause hearing damage.
Even at normal noise levels, echo and reverberation make rooms uncomfortable. The studio sound check works out your room's reverberation from a ten-second recording of your voice.
Measure your roomRuns in your browser. Nothing is uploaded.
This tool uses the Web Audio API built into your browser to capture audio from your microphone and calculate the sound pressure level in decibels. The audio is processed entirely on your device — nothing is recorded, stored, or sent to any server.
Decibel readings are A-weighted (dBA), which matches how human ears perceive loudness. Low frequencies and very high frequencies are de-emphasized because our ears are less sensitive to them.
Browser-based measurements are approximate. Your device's microphone isn't calibrated like a professional sound level meter, so readings may differ by 5–10 dB from a calibrated instrument. That said, it's accurate enough to tell the difference between a quiet room and a loud one, and to track relative changes in your environment.
The CDC recommends avoiding prolonged exposure to noise above 70 dB. Sounds at 85 dB or above can cause hearing damage with extended exposure. For a comfortable home office or living space, aim for ambient noise below 45 dB.