the average size of an erect male penis from one source was 5.2 -6.2 and another is 5.5 to 6.2 . from the research i've done , those sizes encompass almost 90% of males , not just in the US but world wide. Most males measure wrong , you measure from the top , not under . also , remember this . size really doesn't matter. i know a man who has what would be considered a micro penis . he has 3 healthy kids. most males who would be a bit larger , they have no skills and count on the size to make up for that , or in other words . they are typical males. it's all about them . do research , do not use porn as a guide. learn your lessons , read a lot , practice and also most of what your friends will tell you is wrong . they got it from another friend who got it from porn or a magazine . none of the above you should use as a guide . when you are with some one , if she or he is going to judge you on size , you do not need to be with them . lastly 2 things . communication between you and your partner is paramount , before during and after, . if you are in a relationship , as i have taught , you see when the s is in relationship . down near the end . the s meaning sex. it sex is the top priority then you don't have a relationship . for there is far more to a relationship besides sex. i'm a lot older , got 6 dacades behind me , guess what , i never stop learning , not only about sex , relationships but all things. peace