Understanding the decibel scale
Decibels use a logarithmic scale, so equal numeric steps do not represent equal changes in physical sound intensity. Real-world examples are approximate and vary by distance and environment.
Interactive guide
Decibel Chart & Sound Level Guide
Move the slider to compare approximate sound levels and understand how the logarithmic decibel scale changes.
Selected level70 dBLoud
20406080100120 dB
ExampleBusy environment
Common approximate sound levels
30 dBWhisper / very quiet room
40 dBQuiet room
50 dBModerate indoor sound
60 dBConversation
70 dBBusy environment
80 dBLoud traffic or equipment
90 dBVery loud environment
100 dBConcert-level sound nearby
110 dBExtremely loud sound
120 dBPainfully loud range