Hearing Aid Gain Calculator
Calculate prescribed hearing aid gain at multiple frequencies using NAL-NL2 prescription method based on audiometric hearing loss.
Inputs
Results
Overall Prescribed Gain
20.6 dB
Gain at 250 Hz7.8 dB
Gain at 1 kHz18.4 dB
Gain at 2 kHz26 dB
Gain at 4 kHz30 dB
Prescription Method1
How to Use This Calculator
- Enter the patient's hearing loss thresholds (dB HL) at 250 Hz, 1 kHz, 2 kHz, and 4 kHz from the audiogram.
- The calculator applies the NAL-R half-gain rule to estimate target gain at each frequency.
- Review the prescribed gain (dB) across frequencies.
- Use the output as a starting point for hearing aid fitting — fine-tune with real-ear measurement.
- Always program hearing aids under the supervision of a licensed audiologist.
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