penis-size-fact

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.

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.

A penis must be completely erect in order to obtain an accurate measurement.

Erect Penis

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.
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 2007 issue of BJU International, have shown that average erect penis length is 14–16 cm (5.5-6.3 in) and its
girth is 12–13 cm (4.7-5.1 in).
This paper compares results of twelve studies conducted on different populations in several countries.

Flaccid length

One study found the mean flaccid penis length to be 3.5 inches (8.9 cm) (measured by staff). A review of several studies have shown average flaccid length to be 9–10 cm. Length of the flaccid penis does not necessarily correspond to length of the erect penis; some smaller flaccid penises can grow much larger, and some larger flaccid penises cannot grow much larger.

Stretched length

Flaccid penis length is a poor estimate of erect length, a better estimate is stretched length, that is 12–13 cm, as shown in review by Wylie and Erdley.

Human Penis Size