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Q and A Banner - #3 (World Records-1)

Monday, September 12, 2011


The average penis size is between five and six inches, (12.7cm - 15.2cm). That's for an erect penis.

The consensus on typical circumference is 4.85 inches (12.3 cm), requiring a diameter of roughly 1.54 inches (3.9 cm), when fully erect.

In 2007, Dr Kevan Wylie from the Porterbrook Clinic and Royal Hallamshire Hospital in Sheffield and Ian Eardley from St James’ Hospital in Leeds worked together to study the collective findings of more than 50 international research projects into penis size and small penis syndrome carried out since 1942. Their findings were then published in the British Journal of Urology.
By drawing together the results of 12 studies that measured the penises of 11,531 men, they discovered that average erect penises ranged from 14-16cms (5.5 to 6.2 inches) in length and 12-13cm (4.7 to 5.1 inches) in girth.

So, according to the scientific research, the average size of an erect penis is between 5.5 and 6.2 inches long - and given that some of those surveys may have been compromised by self-reporting and self measuring, it's probably safe to assume that the average penis is between five and six inches long.

Other Scientific Studies...
Other 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.

The following staff-measured studies are each composed of different subgroups of the human population (i.e. specific age range and/or race; selection of those with sexual medical concerns or self-selection) which could cause a sample bias.

  • A study published in the December 2000 International Journal of Impotence Research found that average erect penis length in 50 Jewish Caucasian males 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.
  •  A review published in the 2007 issue of BJU International showed the average erect penis length to be 14–16 cm (5.5–6.3 in) and girth to be 12–13 cm (4.7–5.1 in). The paper compared results of twelve studies conducted on different populations in several countries.
  •  An Italian study of about 3,300 Italian men concluded that stretched length was measured on average to about 5 inches (13 cm). In addition, a correlation between weight and height and penis length was also found. However this was done only on 500 men with a small correlation value.

The Penis Size Worldwide (country)

Source(s):  wikipedia, averagepenissize.co.uk,

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