Regular Penis Size–Average Size Penis–How To Measure A Penis

Human penis size is the measured length and width of the human penis. The most accurate measurement of the human penis comes from several measurements at different times, as there is natural variability in size due to arousal level, time of day, room temperature, frequency of sexual activity, and unreliability of the measurement methods. When compared to other primates, including large primates such as the gorilla, the genitalia of male humans are large, both in absolute terms and in relative size to the rest of the body. Results vary, with studies that rely on self-measurement reporting a significantly higher average than those with staff measuring, but a mean human penis is approximately 12.9–15.0 cm (5.1–5.9 in) in length. Flaccid penis length is a poor estimate of erect length. Most of human penis growth happens between infancy and the age of five, and in five years after the onset of puberty. Age is not believed to negatively correlate with penis size, and studies have not found a relation between penis size and race[citation needed]. There is evidence both for and against a link between penis size and the size of other body parts. Some environmental factors in addition to genetic, such as the presence of endocrine disruptors, can affect penis growth. An adult penis with an erect length of less than 7 cm or just over 2 inches but otherwise formed normally is referred to in a medical context as having the micropenis condition.
Perceptions of penis size are culture-specific. In Ancient Greece and in Renaissance art, an uncircumcised and small penis was culturally seen as desirable in a man, whereas a bigger or circumcised penis was viewed as comical or grotesque. Ancient Rome may have had a contrary view, and a larger penis size was preferred in medieval Arabic literature. Males may quite easily underestimate the size of their own penis relative to that of others, and many men who believe that their penis is of inadequate size have average-sized penises. The perception of having a large penis is linked to higher self esteem in general, but also among gay men specifically. For women, width rather than length is a more important factor of sexual stimulation.[citation needed] Fear of shrinking of the penis in folklore have led to a type of mass hysteria called penis panic. Marketers of penis enlargement products exploit fears of inadequacy, but there is no consensus in the scientific community of any non-surgical technique that permanently increases the thickness and length of the erect penis that already falls into the normal range.

Measuring the penis

To get the most accurate measurements for an individual's penis size, it has been recommended that several measurements be taken at different times, preferably with different erections on different days. The measurements are then to be averaged together. This is to account for what may be natural variability in size due to factors such as arousal level, time of day, room temperature, frequency of sexual activity, and unreliability of the measurement methods.

Length

The length can be measured with the subject standing and the penis held parallel to the floor. The penis is measured along the top, from the base to the tip. Results are inaccurate if the measurement is taken along the underside of the penis, or if the subject is seated or prone.

Circumference

Penis girth is the measurement of the circumference of the completely erect penis. 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.

Problems

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.

 

Studies on penis size

While results vary across studies, the consensus is that the mean human penis is approximately 12.9–15 cm (5.1–5.9 in) in length with a 95% confidence interval of (10.7 cm, 19.1 cm) (or, equivalently, 4.23 in, 7.53 in). The typical girth or circumference is approximately 12.3 cm (4.85 in) when fully erect. Yet, one reputable source claims that the relaxed human penis has an average length of only 4 inches (≈10.2 cm) and diameter of 1¼ inches (≈3.2 cm) while fully erect it has an average length of 6 inches (≈15.2 cm) and diameter of 1½ inches (≈3.8 cm). The mean penis size is slightly greater than the median size. Studies have not found a relation between penis size and race.
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