Concerns and doubts about body image seem to be rather common among adolescents and young men, particularly. Many of them express great preoccupation about the normalcy of their attributes of masculinity. However, their worries are less concentrated in the aspect of their secondary sexual characters and in most cases are focused on the dimensions of their genitalia, particularly their penis. The feeling of sexual inadequacy may result in low elf-esteem among those men who consider their penis, and therefore their masculinity, sexual maturity, and prowess, inadequate.

A descriptive, survey-based, and cross-sectional study was conducted among 1110 males aged 18–50 years from five countries. The measurements were made using a standardized approach that consisted in using a flexible tape extended from the pubic bone to the tip of the glans for the length and around the middle of the shaft (circumference). The study was conducted online during three consecutive months.

Among the individuals of the sample, the mean reported body height is 176cm ranging from 163cm to 195cm with a standard deviation of 10.02cm. The reported body weight for them ranges from 55kg to 105kg with a mean of 77.5kg and a standard deviation of 13.4kg. The reported penis's length among the men in the sample ranges from 10.5cm to 14.82cm with a mean of 12.66cm and a standard deviation of 3.4cm.

Length and circumference of the penis can be measured by equations to assess the abnormality depending on height and weight in relation to the constant. These three equations can be used in clinical and diagnostic setting to help clinicians and doctors to take an idea about the patients’ cases and how to deal with them.