How big is your penisat age13?

Variable: not necesarily adult size. Flaccid size does not actually count and can be 1-2 inches as an adult and be average size (roughly 6 inches measured on top, erect, roughly 1 inch diameter).

Puberty: It depends on what stage of puberty you are at. Any problems with your penis would have been discovered at previous Well Child Check ups so I am sure you are fine.

Size: The size of the penis in teenagers varies between different kids and different ethnic groups. So, the answer to your question is hard to estimate.