Over all countries the average size of a penis is about 14.03 cm. "The longest one" is 17.93 cm long and carried by men in the Democratic Republic of the Congo.
Penis Size Around the World. The global average is 5.5in – the size of the display on an iPhone 6 Plus. The title of biggest penises in the world.
The largest in the set was A, while D was the giving an average American penis size when erect.