The penis size is a much-discussed topic in human history. Some men are rather interested in comparing their penis with other men’s.

There are many comparisons of the penis size on the Internet. But when you examine these sites, you will see these points:

1. There are no proper sources.

2. The studies are not found in Google Scholar, a search tool for scientific studies.

3. The studies’ data does not match the sites’ data.

In other words, these sites are unreliable.

Yet people cite these sites and spread stereotypes regarding the manhood of men around the world. They emphasize the alleged difference in the penis size among different races, often with mocking remarks.



Medical studies are archived in the United States National Library of Medicine which is run by the United States government. The studies listed here are reliable.

East Asia

13.75 centimeters / 5.41 inches

Prospective investigation of penile length with newborn male circumcision and second to fourth digit ratio. (PDF)



12.9 centimeters / 5.08 inches

A comprehensive, prospective study of penile dimensions in Chinese men of multiple ethnicities.

South Asia

13.01 centimeters / 5.12 inches

Penile length and circumference: an Indian study. (PDF)

Middle East

13.7 centimeters / 5.39 inches

Penile length and somatometric parameters: a study in healthy young Turkish men.



13.6 centimeters / 5.35 inches

Predicting penile size during erection. (PDF)

13.5 centimeters / 5.31 inches

Penile measurements in normal adult Jordanians and in patients with erectile dysfunction. (PDF)



12.53 centimeters / 4.93 inches

Erect penile dimensions in a cohort of 778 Middle Eastern men: establishment of a nomogram.

Europe

14.41 centimeters / 5.67 inches

Does penile size in younger men cause problems in condom use? a prospective measurement of penile dimensions in 111 young and 32 older men.



13 centimeters / 5.12 inches

Can shoe size predict penile length? (PDF)



Africa

13.37 centimeters / 5.26 inches

Can physique and gluteal size predict penile length in adult Nigerian men?

North America

14.15 centimeters / 5.57 inches

Erect penile length and circumference dimensions of 1,661 sexually active men in the United States.



13.2 centimeters / 5.2 inches

A pilot study on the early use of the vacuum erection device after radical retropubic prostatectomy. (PDF)



12.9 centimeters / 5.08 inches

Penile length in the flaccid and erect states: guidelines for penile augmentation.

World

13.12 centimeters / 5.17 inches

Am I normal? A systematic review and construction of nomograms for flaccid and erect penis length and circumference in up to 15,521 men.



Scientifically, there is no significant racial difference in the penis size.

Refer to this article if someone says otherwise.



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