Decibel (Loudness) Comparison Chart
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1
2Decibel (Loudness) Comparison Chart
Here are some interesting numbers, collected from a variety of sources, which help one to understand the volume levels of
various sources and how they can affect our hearing.
Environmental Noise
Weakest sound heard
0dB
Whisper Quiet Library
30dB
Normal conversation (3-5')
60-70dB
Telephone dial tone
80dB
City Traffic (inside car)
85dB
Train whistle at 500', Truck Traffic
90dB
Subway train at 200'
95dB
Level at which sustained exposure may result in hearing loss
90 - 95dB
Power mower at 3'
107dB
Snowmobile, Motorcycle
100dB
Power saw at 3'
110dB
Sandblasting, Loud Rock Concert
115dB
Pain begins
125dB
Pneumatic riveter at 4'
125dB
Even short term exposure can cause permanent damage -
140dB
Loudest recommended exposure WITH hearing protection
Jet engine at 100', Gun Blast
140dB
Death of hearing tissue
180dB
Loudest sound possible
194dB
OSHA Daily Permissible Noise Level Exposure
Hours per day
Sound level
8
90dB
6
92dB
4
95dB
3
97dB
2
100dB
1.5
102dB
1
105dB
.5
110dB
.25 or less
115dB
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