At What Age Does Penis Growth Begin?

Plus How To Know Your Final Penis Size

Brothers sit together on the couch.
Brothers sit together on the couch. Hero Images/Getty Images

Question: At what age does penis growth begin?

Answer: The penis usually starts growing between the ages of 10 to 14, and the most rapid growth occurs between the ages of 12 and 16. At this point, the testicles begin to grow larger, and then pubic hair begins to emerge. As time passes, the penis grows in length first and then, later on, begins to grow in girth as well.

If you're feeling self-conscious about your size, and about how you measure up to your peers, you may be wondering if you still have some growing up to do.

Perhaps you've seen a large variety of sizes while changing in the locker room after gym class. Or maybe you have older siblings at home whose anatomy appears to look very different from your own. How do you compare? Will you ever measure up? These years can be fraught with feelings of self-consciousness as you make your way through puberty.

In general, teenagers have to wait for one or two years after they stop growing in height, or four to six years after the testicles enlarge, before they can know their final penis size. Most guys are fully developed between the ages of 18 and 21.

When you are done growing, you should be secure in the knowledge that there is a large range of penis sizes that have been scientifically confirmed. Though men often underestimate the size of their penis because of the angle at which they see it, chances are good that your own penis size is well within the range of what it should be.

And if you can urinate and engage in sexual activity (even of the solo kind) without any problems in functioning, the equipment you're working with is just fine.

If you feel that you might be late in going through puberty, or you have concerns that your penis is abnormally small, you should consult with your regular doctor.

If you feel awkward about bringing up the topic with your primary care physician, perhaps just start with the facts, asking him what the normal size for a penis is for someone your age. He should be able to swiftly put to rest any worries you may have.

And if that doesn't ease your worries, scientific research should. It appears that, according to women, size doesn't actually matter. Unless, of course, you're trying to locate the condoms that will fit your penis best.

There are many different sizes and appearances of penises out there as there are men in the world. Try not to let puberty's growing changes stress you out. You're growing into exactly the man you were meant to be.

Source:

Biro FM; Lucky AW; Huster GA; Morrison JA. "Pubertal staging in boys." J Pediatr 1995 Jul;127(1):100-2.

Continue Reading