Noise Level dB Calculator
Calculate combined noise levels, distance attenuation, and safe exposure times.
6.1Kuses
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Combine Two Sound Sources
Distance Attenuation
Combined Level
76.2 dB
At Distance
60.0 dB
Attenuation
-20.0 dB
Safe Exposure
Unlimited
Common Noise Levels
Breathing
10 dB
Whisper
20 dB
Library
30 dB
Quiet office
40 dB
Normal conversation
60 dB
Vacuum cleaner
70 dB
City traffic
80 dB
Lawn mower
90 dB
Concerts
100 dB
Chainsaw
110 dB
Jet takeoff
130 dB
Gunshot
140 dB
Decibel Scale Guide
Decibels are logarithmic. +3 dB doubles intensity. +10 dB sounds twice as loud. Sustained exposure above 85 dB can cause hearing damage.
Disclaimer: This tool is provided as-is for informational and educational purposes only.