Audiology calculator

Fowler-Sabin calculator — binaural hearing loss

Enter the hearing thresholds from your audiogram for the left and right ear. Using the Fowler-Sabin method, the calculator estimates the percentage of hearing impairment for each ear and the binaural (overall) loss. Your inputs stay on your device.

Enter the hearing thresholds for both ears (in dB)

Thresholds are read from the audiogram for four key speech frequencies. Enter the value in decibels for each field (0–120 dB).

Ear	500 Hz	1000 Hz	2000 Hz	4000 Hz
Left (L)
Right (R)

Example: if the audiogram shows a 25 dB threshold at 500 Hz on the left ear, enter 25 in the first field. Thresholds ≤ 15 dB count as normal hearing (0%).

Important: The Fowler-Sabin method is an orientational model for estimating the binaural (overall) percentage of hearing loss from thresholds at 500, 1000, 2000, and 4000 Hz, with weighting factors of 15%, 30%, 40%, and 15%. Binaural loss = (5 × better ear + 1 × worse ear) / 6. The calculator does not replace a clinical audiology report or an ENT specialist’s assessment. The exact degree of impairment, the type of loss (conductive / sensorineural / mixed), and decisions on treatment or hearing amplification are made by a physician after a complete examination.

Dan	Od	Do
Ponedeljak	08:00	18:00
Utorak	08:00	18:00
Sreda	08:00	18:00
Četvrtak	08:00	18:00
Petak	08:00	18:00
Subota	08:00	14:00
Nedelja	zatvoreno

Fowler-Sabin calculator — binaural hearing loss

Enter the hearing thresholds for both ears (in dB)

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