For many men the penis is an integral part of masculinity and as we’re growing up and even later in life, it is a very normal question to ask: Is my penis too small?


The penis has significant functions that work more efficiently with some length, such as urinating at a urinal. If the penis is recessed back into our body, we can dribble and wee/pee sideways . The other function is for penetrative intercourse, our penis to fills with blood to get an erection which enables penetration during intercourse. Erections also help to maintain circulation in the penis and keep the tissues healthy. Similarly, for those who have a clitoris, which also fills with blood to maintain circulation and tissue health. 


Many boys will start puberty between the ages of 12 and 16. The penis grows in length first and then begins to grow in girth width. The changes to your penis size may happen quickly or more slowly in some people. You may notice that your body, including your penis, goes through rapid changes for a few weeks, and then stays the same for months before changes start again. We generally reach full size between 18 and 21. However our penis continues to grow for one to two years after we stop growing. The age that you start puberty is unrelated to the size of your penis.

Most penises are generally around the same length with one study from 2014 Journal of Sexual Medicine finding the average length of an erect penis was 14.15 cm.


Once our penis has fully developed, we maintain our length through erections. When we sleep and do so deeply, we undergo Rapid Eye Movement (REM) sleep where deep sleep and dreaming occurs and it’s also when we get an erection. These REM sleep erections are similar in people who have a clitoris, which also fills with blood during REM sleep. So, it’s very common to wake up with an erection in the morning if your REM sleep happened shortly before waking. The function of getting an erection currently is to maintain the length of the penis. So regular night-time erections help to maintain it’s health and length. 

As with REM sleep, masturbating is a very normal practice, and it will maintain the health of the penis but will not increase its length.


Erectile or Sexual function can be improved. Studies have shown that the Pelvic Floor Muscles play an important role in maintaining erections and in orgasm or climax. It has been shown in recent studies that well-toned Pelvic Floor Muscles (PFMs) can be as effective as Viagra. The men in this British study who improved their lifestyle combined with doing PFM exercises for three months markedly improved their erectile function. This was compared with the group of men who made improvements to their lifestyles only in diet etc.


Penis size is not an indication of sexual performance. By far and away the most important organ in sexual performance is the brain. Excellent lovers come in all shapes and sizes and that includes all their visible sexual organs. Being a compassionate creative, lover with open and clear communication will out-perform any size!

If you have any concerns about the size of your Penis, then don’t hesitate to ask and have a chat with your GP.

Article by Sam Gebert - Nurse Continence Specialist




Sam Gebert is a Nurse Continence Specialist . Sam is a passionate advocate of men’s health, with a speciality in men’s continence and sexual health. He joins us after working at Movember in the Prostate Cancer program of TrueNTH where he care-coordinated an Australia wide telehealth program.