Hi, i'm 13 and my penis is 5.9 in long, is this normal? And how large will it grow? I herd the average size is about 3-4 for my age. so is my size normal?
5.9" for an erect penis is in the normal range for a Caucasian adult. A 13-year-old who has not reached puberty, or who is just entering puberty would likely be much smaller as the penis grows at puberty.