How big is the average penis for someone age 13 when erect?

I agree with the second poster i that you need to give us more background information before we can accurately answer this question.

Penis sizes vary with each individual. There is no "right" penis size. That said, you should keep in mind that the average adult American male is right around 6 inches when erect and around half that when flaccid. A 13 year old boy likely would be significantly smaller than that. Anywhere from about 3/3.5 inches and up when erect is normal. Anything smaller isn't abnormal, it just may mean you haven't hit *that* stage of puberty yet. Anything over 3/3.5 inches, well, just consider yourself lucky that you're a fast grower.

Don't stress about it, you'll turn out fine.

The average 13 year old's penis is 4.5 inches long, but you are fine if you are 4-5 inches. I am 13 too and i am 4 inches, don't worry if you are below that some guys grow later... Report It

4-5 inches.

With the info you have provided there is no definitive answer - for example this will depend on your ethnic background, when you started pubety etc.

If you are measuring along its length from where it joins your scrotum, the range is going to be considerable but if you are anywhere between 4 and 7 inches, this is quite 'normal'.

In any case don't worry - easy for others to say I know - but really size isn't that important - and particularly as you look at it (from above) it will always look smaller than another person looking from the side or front.

Good luck

The average for american caucasian males is about 5", asians are smaller on the average and black men are larger. This has been studied and that particular myth is true.

3.5 to 4.5 inches average. 2 inches to 8 inches still normal.

3.5-5.2 inches