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Decibels (dB)

A decibel (dB) is a unit used to measure how loud a sound is (intensity).

For example, a whisper usually measures about 15 dB to 30 dB, a vacuum cleaner about 75 dB, and a motorcycle about 100 dB. Any sound over 85 dB is considered harmful.

ByHealthwise Staff
Primary Medical ReviewerWilliam H. Blahd, Jr., MD, FACEP - Emergency Medicine
Specialist Medical ReviewerCharles M. Myer, III, MD - Otolaryngology
Last RevisedApril 8, 2013

WebMD Medical Reference from Healthwise

Last Updated: April 08, 2013
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