Hearing Loss Risk Calculator
Hearing Loss Risk
Assess your risk of noise-induced hearing loss based on daily noise exposure levels
dB
hours/day
Formula
Safe Hours = 8 / 2^((Effective dB - 85) / 3); Exposure Ratio = Duration / Safe Hours
Frequently Asked Questions
At what decibel level does hearing damage occur?
Sustained exposure above 85 dB can cause hearing damage. The safe duration halves for every 3 dB increase above this threshold.
How effective is hearing protection?
Foam earplugs reduce noise by about 20 dB, earmuffs by 25 dB, and custom-molded plugs by up to 30 dB when properly fitted.