When will my penis start to grow?

I am a male experiencing puberty. Some of my friends have seen growth in their penises, and I have not. When and how will my penis start to grow?


Puberty is different for everyone and can begin as early as 9 years of age for some and as late as 14 or 15 years of age for others. During puberty, your penis will grow longer and thicker. However, like all changes that occur during puberty, penis growth occurs at different times and at different speeds for each individual. Therefore, if you are just beginning to experience puberty, it is likely that your penis is nowhere near finished growing.

    The first change that your genitals will undergo will be the enlargement of your scrotum and testicles (two sensitive, almond-shaped structures inside of your scrotum). After this change in scrotum size begins, your penis will begin to grow. In these beginning stages of puberty, your penis may grow in length, but not much in width. At this point, you may begin to grow pubic hair, which will thicken and become coarser over the span of puberty. Your penis will eventually thicken and begin to produce semen, allowing for ejaculation. Your penis will continue to grow throughout puberty and will not stop until puberty is over. For most males, this will be between ages 16-18, but some males have been known to experience puberty and penis growth into their early twenties.

    As penis growth occurs, you will notice changes that may come as a surprise. One of these new experiences that you may or may not have already encountered is an erection. An erection occurs when the structures in your penis expand and fill with blood and the shaft of the penis becomes hard. Erections are typically the most common in the morning, immediately after waking up, but they can occur spontaneously throughout the day or night. Many erections occur when you are not even thinking about anything sexual. Erections are a normal part of puberty that are nothing to worry about.  Something else that may occur throughout puberty are nocturnal emissions, commonly known as “wet dreams.” A wet dream occurs when you ejaculate (expel semen from your penis) in your sleep, and wake up with wet pajamas and sheets. Like erections, “wet dreams” are a normal part of puberty and usually stop when you get older. If you would like to reduce the amount of wet dreams you encounter, try masturbating to ejaculation right before bed.

    Penis growth and puberty occur at different times and at different speeds for each person. It is also important to note that penis size is genetic, just like the size of your hands or the color of your eyes. There is no such thing as a “normal” penis size. Keep in mind that penis size has nothing to do with your masculinity or your sexual ability (if you are a heterosexual male, please know that the majority of nerves in a female’s vaginal canal are actually located at the very opening of the vagina, so the length of a penis is oftentimes irrelevant for providing female pleasure). If this worry persists, we encourage you to talk to your parents or doctor about the different stages of puberty.