Average Penis Size

Studies have shown that the average penis size is anywhere from 5-7 inches. Below are the result based on survey of 600 males, between the ages of 19 to 30 in USA.

Average Penis Size Based on Race

Asians - 4-5" in length and 1.25" in diameter
Caucasians -  5.5-6" in length and 1.5" in diameter
Africans - 6.26-8" in length and 2" in diameter

Result show clearly shows that African males have longer average erect penis size then their Orientals and Caucasians counterparts.

There was a significant difference in length between African, Caucasians, and Orientals (those from Asia including Chinese, Japanese, Korean, or Vietnamese descent). The average flaccid length among African males survey shows the average erected penis length at around 7 inches compared to 5 inches for Oriental males.

From the result above, it visibly shows that oriental males have short penises, but we have found it has nothing to do with race, but more with the genetic factors and the ethnic group's diet which adversely effects their build and height of a person. There is evidence of a very slight correlation between penis length and body height. On average oriental males are shorter than African and Caucasians males.

Oriental males are genetically not short; it is primarily the result of traditional Asian diets during childhood and the years of puberty. Most oriental males lack in dairy and protein product contain in meat which are common in western diets. Therefore, these can effect the development of the body as well as the size of the penis.

World's Largest Penis

The longest erect penis was record by Dr. David Reuben in 1969.  The patients name is unknown.

The erect length was 14 inches and 6.25 inches in circumference.

World's Smallest Penis

There are several instances in medical literature of penises that do not exceed 1/2 inch when fully erect, which doctors call an micropenis.