Decibel Meter: Sound Level

Measure sound with your phone’s microphone. See live decibels, minimum, average (Leq) and maximum levels. Choose A, C or Z weighting, switch between meter layouts and set an alert for sustained noise above a level you choose.

Start a sound log, add markers and notes, and optionally record audio or add a location. Capture photos or videos with a sound level overlay. Review logs and media in Saved, then share PDF reports or export readings as CSV.

Compare sound levels between places or map them along a route with Noise walk. Use Noise report to review loud moments and Sleep to review overnight sound. Explore frequencies with the Audio Analyzer’s spectrum and spectrogram. Turn on Sound recognition (Beta) to see suggested labels for sounds such as barking or alarms.

Sound readings are estimates and depend on your phone’s microphone and calibration.