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What diameter is closest to the average realistic size of a penis.
According to the data "out there" (its difficult to find reliable sources), I believe that the average diameter reported is 1.6 inches, average circumference is 4.85". When looking at sources of info, make sure it is not from penis enlargement companies. I believe that condom manufacturers have done studies (i.e. Trojan, Lifestyles) and the Kinsey Institute website reports studies it. keep in mind that diameter and circumference are not the same!