Measure sound levels in real-time with this decibel meter using your device's microphone
For accurate readings, calibrate your microphone to known sound levels. Stay in a quiet room and click below:
Calibration (0 dB)
Sensitivity (1.0x)
0-20 dB
Whisper, quiet library
40-60 dB
Normal conversation, office environment
60-80 dB
City traffic, vacuum cleaner
90-100 dB
Factory machinery, lawnmower
110-120 dB
Rock concert, chainsaw
130+ dB
Jet engine, gunshot (dangerous levels)