Free tool
Workplace Noise Exposure Checker
Estimate a daily noise dose and compare NIOSH recommendations with OSHA's general-industry exposure criteria.
Add your day's noise exposures.
NIOSH dose (85 dBA / 3 dB)
100%
At or above the recommended daily exposure limit.
OSHA PEL dose (90 dBA / 5 dB)
0%
Below the modeled PEL; hearing conservation may still be required.
Hearing-conservation estimate: 50% dose. Meets or exceeds OSHA's 85 dBA 8-hour action level (50% dose).
US general-industry educational estimate—not a compliance certification. PEL dose excludes readings below 90 dBA; conservation dose includes readings from 80 dBA. NIOSH estimate includes readings from 80 dBA. No hearing-protector attenuation is subtracted. Impulse noise, measurement accuracy and industry-specific rules require professional assessment.
OSHA occupational noise standardFrequently asked
Can this diagnose hearing loss?
No. Uncalibrated devices, headphones and listening environments affect what you hear. An audiologist can measure hearing thresholds and investigate symptoms.
What if my hearing changed suddenly?
Sudden hearing loss needs urgent medical assessment. Do not wait for an online result. New one-sided symptoms, dizziness, pain or drainage also need medical advice.