Although mankind has evolved in many aspects, separating and becoming different from animals, sex is still one of the most important things of our lives (maybe because the one we practice is not the same as the one that animals do). Concomitantly, men care a lot about their penis size, taking it as a measure of his manhood. No matter how often it’s written that penile size doesn’t matter, and that women aren’t attracted to a man because of the length of his organ, the average male continues to think the same way. It’s useless to deny it, we all do, and the inevitable question is: Is my penis small?, or What is the average penis size?

A curious fact:

Did you know that the human penis size is larger than that of any other primate, both in absolute terms and when compared to body size?

How to measure the penis

It is important that, when we want to compare our results with others, the measurements had been made in the same way. Here are some conventional ways to do it:


The length is typically measured with the subject standing and the penis held parallel to the floor. The penis is measured along the top, from the base (abdomen) to the tip. Results are less accurate if the measurement is taken along the underside of the penis, or if the subject is seated or prone.


Penis circumference or girth is measured by using a plastic tape measure while the penis is completely erect. It is variously quoted as an average of three measurements: just below the glans penis, in the middle of the shaft, and at the base.


A penis must be completely erect in order to obtain an accurate measurement. This may be difficult to achieve in a clinical setting. At least one Brazilian doctor resorted to injecting penises with drugs to induce erection, which gave more consistent results. Some clinicians measure the penis by stretching the flaccid penis as far as comfortably possible. Self-reported measurements tend to be unreliable because men often want to report that their penis is larger than others.

So, what is the average penis size?

You can’t judge the true size of a penis while it is flaccid or not erect. Sometimes guys with relatively small flaccid penises grow to a larger size when erect, while their larger counterparts don’t show as much growth when aroused. Thus the terms, grower and shower.We will only refer to the erect measurements.

Erect length

Several scientific studies have been performed on the erect length of the adult penis. Studies which have relied on self-measurement, including those from Internet surveys, consistently reported a higher average length than those which used medical or scientific methods to obtain measurements.

  • A study published in the September 1996 Journal of Urology concluded that average erect length was 12.9 cm (5.08 in) (Measured by staff). The purpose of the study was to “provide guidelines of penile length and circumference to assist in counseling patients considering penile augmentation”. Erection was pharmacological induced in 80 physically normal American men (varying ethnicity, average age 54). Author Wessels said that the patients were heavier than usual on average. With older men having a thicker pubic fat pad on average (which lessens non bone-pressed erection measurements) vs. younger men. But because of individual variances it was concluded: “Neither patient age nor size of the flaccid penis accurately predicted erectile length”. Age is not believed to negatively correlate with penis size. “Individual research studies have … suggested that penis size is smaller in studies focusing on older men, but Wylie and Eardley found no overall differences when they collated the results of various studies [over a 60 year period].”
  • A study published in the December 2000 International Journal of Impotence Research found that average erect penis length was 13.6 cm (5.35 in) (Measured by staff). Quote: “The aim of this prospective study was to identify clinical and engineering parameters of the flaccid penis for prediction of penile size during erection.” Erection was pharmacologically induced in 50 Jewish Caucasian patients who had been evaluated for Erectile dysfunction (average age 47±14y). Patients with penis abnormalities or whose ED could be attributed to more than one psychological origin were omitted from the study.
  • A study conducted by LifeStyles Condoms found an average of 14.9 cm (5.9 in) with a standard deviation of 2.1 cm (0.8 in) (Measured by staff). The purpose of this study was to ensure properly sized condoms were available. 401 college students volunteered to be measured during 2001 Spring Break in Cancún, Mexico. Of these 300 gained an erection to be clinically measured (without pharmacological aid).

So, the actual average should be between 12.9 and 14.9 cm (5 – 6 in)

Erect circumference

  • A study conducted by LifeStyles Condoms during 2001 Spring Break in Cancún found an average of 12.6 cm (5.0 in) with a standard deviation of 1.3 cm (0.5 in).

Similar results exist regarding studies of the circumference of the adult fully erect penis, with the measurement taken mid-shaft. As with length, studies that relied on self-measurement consistently reported a higher average than those with staff measuring.

The way “you” look at it

Surely this has happened to you. You are taking a bath at the gym, and everyone elses penis seem bigger than yours, and immediately you start thinking: how could this be possible, am I really the smallest?

The trouble is that every man sees his own penis in a foreshortened view. The angle at which you look down inevitably makes your penis seem shorter than it is.

But when you glance at another man’s organ, there’s no such foreshortening effect, so very often it’ll look as though the other guy is slightly better endowed.

A lifetime of comparison of this sort (and virtually every male does a quick mental check on each naked man he comes across) can easily make you feel a bit inadequate. But it’s important to realize the true dimensions of penis length.

Optimistic view

Modern sexologists argue that we should look at what counts as ‘too small’ rather than being hung up about average sizes. Anything under 7 cms when erect is considered clinically small for a penis – which means most men measure up just fine.

But, if are among the ones that doesn’t fit there, don’t panic, there’s always an answer to our problems, read the penis enlargement articles to find an answer.

Sources: wikipedia, netdoctor, mansized

No related content found.