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Audiology Information Series
More information on this topic can be found in our Audiology Information Series [PDF].

Degree of Hearing Loss

Hearing Loss: Type of Hearing Loss | Degree of Hearing Loss | Configuration of Hearing Loss

Degree of hearing loss refers to the severity of the loss. The table below shows one of the more commonly used classification systems. The numbers are representative of the patient's hearing loss range in decibels (dB HL).

Degree of hearing loss Hearing loss range (dB HL)
Normal –10 to 15
Slight 16 to 25
Mild 26 to 40
Moderate 41 to 55
Moderately severe 56 to 70
Severe 71 to 90
Profound 91+
Source: Clark, J. G. (1981). Uses and abuses of hearing loss classification. Asha, 23, 493–500.

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