Small, medium, large: Hard to find good, consistent info on penis sizes, but several doctors on HealthTap have offered opinions. It looks like the average erect one is 5-6 inches, so if a guy is worried about being less than 4 inches, he can talk with his doctor. When non-erect, perhaps under 1.5 inches would be small. In the end, function comes before size.
Answered 2/1/2020
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2 doctors weighed in across 2 answers
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