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DrOAB, Doctor (MD)
Category: Health
Satisfied Customers: 1032
Experience:  In practice since 2000.
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How should a 13 year old boys penis be

Customer Question

how long should a 13 year old boys penis be
Submitted: 8 years ago.
Category: Health
Expert:  DrOAB replied 8 years ago.


There is no medical standard for penis size. The statistical average size for an adult (i.e., beyond puberty) male when erect is 4.5-5.5 inches. If adult penis size when erect is less than 7 cm (2.75 inches), then the diagnosis of "microphallus" or "micropenis" may be made; as this condition may involve hormonal or genetic causes, evaluation by an endocrinologist (hormone specialist) may be helpful.