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Average Penis Size: How Do You Measure Up?

His Clinic · January 25, 2019

From checking out the package on Michelangelo’s statue of David, to purchasing cucumbers at the grocery store, it’s something every man has contemplated; what is the average penis size? Studies into this age-old question show varied results based on self measurement versus medical measurement and also differing results depending on the time of day and amount of sex the penis is engaging in.

But does size even matter? And is one penis noticeably different to the next when it comes to size? One study found that while 85% of women are happy with the size of their partner’s penis, only 55% of men are happy with what they’re packing in their pants[1], demonstrating that women care less about penis size than men do while men are unfortunately, placing unrealistic expectations upon themselves. While it’s easy to think that bigger is better, is this actually the case? And what can you do if your penis falls outside the realms of average?

The Answer You’ve Been Waiting For

Watching porn, or even discussing the size of your penis with others, can give you unrealistic expectations of how large your penis should be or how it should look. The most comprehensive study to date on the topic of average penis size looked at 15,521 men whose penises were measured by health professionals. This study concluded that the average length of an erect human penis is 13.12 centimetres long, while the average circumference of an erect penis is 11.66* centimetres. Interestingly enough, the human penis is the thickest amongst all primates both relatively to the body and in absolute terms compared to the rest of our ape relatives. According to this study 45% of men would like a larger penis while 0.2% of men wish their penis were smaller. But how important is size anyway?


It’s Not The Size Of The Boat…

When considering penis size and sexual performance, it’s important to note that the average vagina has a depth of 7.62 centimetres when not aroused, expanding to 10.16 centimetres when turned on. Furthermore, the most important nerves of the vagina exist within the first two and a half centimetres; so practically all penises have the potential to provide pleasure, despite their size. This is why, more than penis length, women are concerned with the width (or girth) of a penis to stimulate these nerves.

Unfortunately, even if your penis is of average size, feelings of inadequacy can lead to anxiety, depression and erectile dysfunction. If concerns about penis size are linked to sexual performance, it can be beneficial to focus on all parts of intercourse, other than just penetrative sex. This can include stimulating your partner’s mind, making time to be affectionate with one another and, when you do make it to the bedroom, focusing on foreplay. Good foreplay will drastically improve all subsequent penetrative sex increasing the likelihood of orgasm.

How To Measure Your Penis

You may want to measure your penis to assess what size condoms to wear or simply to see how you “measure up” to the average. In order to gain the measurements of either your erect or flaccid penis, place a tape measure at the base of your penis where it meets the pubic bone, ensuring you get as close to the bone as you can, compressing any fatty deposits. Measure your penis from the base to the end of the glans (the rounded tip of your penis) not including any foreskin. To measure the circumference of your penis either use a soft material like string or ribbon or a soft measuring tape, wrapping it around either the base or shaft of your penis.

If You Don’t Measure Up

If you don’t perceive your penis to be large enough, there are numerous things you can do to help, these include:

  • Choosing positions which allow for deep penetration of your partner
  • Working on improving your self esteem by focusing on the parts of your body you like. Confidence makes a big difference in the bedroom as well as in life
  • Consider a lengthening procedure. A penis must have a flaccid length of less than 4 centimeters, or a stretched or erect length of less than 7.5 centimeters* to qualify for medical intervention. This option should only be approached once you have consulted with a doctor and/or psychologist as penis size and erectile dysfunction can lead to depression and anxiety and it’s important to ensure you aren’t experiencing any body dysmorphia before undergoing surgery. Procedures that can make a difference to the size of your penis can include; liposuction from the base of the penis to make it appear bigger, skin grafts to increase the girth of your penis, and inflatable implants which can assist with erectile dysfunction
  • Make the most of what you already have. Various erectile dysfunction treatments can give nature a hand by helping to increase blood flow to the penis, giving you a thicker, stronger erection.

Penis size has long been linked to masculinity and can be intimately tied to a man’s self esteem. While penis size is likely not the most important thing in your relationship, you can begin to focus on it more than necessary if you perceive it to be not of the ideal size. But you can rest assured that despite the nuances of your penis, when it comes to sex, your confidence and technique are of far greater value than size.

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Reasonable care has been taken to provide accurate information at the time of creation but this is for informational purposes only.

This information is not intended to substitute medical advice, diagnosis or treatment and should not be relied on to manage or diagnose a medical condition.

This information is not intended for use in an emergency. If you are suffering an acute illness, overdose, or emergency condition, call triple zero (000) and ask for an ambulance



Lever, Janet & Frederick, David & Peplau, Letitia. (2006). Does Size Matter? Men’s and Women’s Views on Penis Size Across the Lifespan.. Psychology of Men & Masculinity. 7. 129-143. 10.1037/1524-9220.7.3.129.

Veale, David; Miles, Sarah; Bramley, Sally; Muir, Gordon; Hodsoll, John (2015). “Am I normal? A systematic review and construction of nomograms for flaccid and erect penis length and circumference in up to 15 521 men”. BJU International. 115 (6): 978–986. doi:10.1111/bju.13010. PMID 25487360.

Wessells H, Lue TF, McAninch JW, (1996) Penile length in the flaccid and erect states: guidelines for penile augmentation. J Urol. Sep;156(3):995-7.



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