Hearing Loss Calculator
Calculate the Pure Tone Average (PTA) to determine the degree and percentage of hearing impairment.
Input Parameters
Enter details for calculation.
Pure Tone Average
Expert Tip
Normal hearing thresholds are ≤ 20 dB. Impairment levels range from mild (26-40 dB) to profound (> 90 dB).
Calculation Methodology & Details
Formula
Averages pure tone thresholds at frequencies critical for speech perception.
Important Disclaimer
The calculations provided are for educational and general informational purposes only. They do not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider.
How Hearing Impairment is Graded
Follow these steps to use this calculator:
Enter Audiogram Values
Input minimum volume heard at 500, 1000, and 2000 Hz.
Read Severity Grade
Evaluate impairment categorization.
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ℹ️ About this Calculation
This ophthalmology and otolaryngology (ENT) clinical calculator evaluates visual acuity metrics, intraocular lens power, audiometric hearing threshold shifts, voice dysfunction scores, and occupational noise exposure limits based on AAO and OSHA standards.
Variable Glossary
Sensory & Biometric Measurements
Snellen fraction (20/20), LogMAR, corneal keratometry (K), axial length (mm), audiogram decibels (dB), or dBA noise levels.
Clinical Assessment Scales
Target IOL diopters (SRK/T formula), pure-tone average (PTA), GRBAS dysphonia grade, and daily noise dose percentage.
How to Calculate Step-by-Step
Step 1
Select visual acuity notation system (Imperial Snellen, Metric, LogMAR, Decimal) or audiometric frequency thresholds.
Step 2
Input ocular biometry parameters, sound decibel levels, or voice acoustic ratings.
Step 3
Review converted vision scales, recommended lens implant diopters, or hearing impairment classification.