Pure Tone Average (PTA) Hearing Threshold Calculator

Calculates the pure tone average (PTA) hearing threshold from audiogram values at 500 Hz, 1000 Hz, and 2000 Hz. PTA = (threshold 500 Hz + threshold 1000 Hz + threshold 2000 Hz) / 3. Normal ≤25 dB HL; mild loss 26–40; moderate 41–55; moderately severe 56–70; severe 71–90; profound >90 dB HL.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Calculates the pure tone average (PTA) hearing threshold from audiogram values at 500 Hz, 1000 Hz, and 2000 Hz. PTA = (threshold 500 Hz + threshold 1000 Hz + threshold 2000 Hz) / 3. Normal ≤25 dB HL; mild loss 26–40; moderate 41–55; moderately severe 56–70; severe 71–90; profound >90 dB HL

Each component has a specific meaning:

  • 1000 Hz — The 1000 hz recorded for the scenario being assessed.
  • 2000 Hz — The 2000 hz recorded for the scenario being assessed.

Note: Interpret the pure tone average result against the thresholds and context described above.

How to Use

Enter the 1000 Hz, 2000 Hz for the scenario you are assessing. Calculates the pure tone average (PTA) hearing threshold from audiogram values at 500 Hz, 1000 Hz, and 2000 Hz. PTA = (threshold 500 Hz + threshold 1000 Hz + threshold 2000 Hz) / 3. Normal ≤25 dB HL; mild loss 26–40; moderate 41–55; moderately severe 56–70; severe 71–90; profound >90 dB HL. Use the pure tone average result to inform your calculation.

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