Research breaks down average penis size, what influences growth, and what studies say about size and sexual satisfaction.

The average penis size is about 5.2 inches in length when erect and 3.6 inches while flaccid. It is also about 4.6 inches in girth while erect and 3.7 inches around while flaccid. Larger penises may ...

Penis growth happens mostly during puberty, which often starts between ages 9 and 14, and usually slows by ages 18 or 19. Average penis size varies widely, but studies list flaccid length around 3.4 ...

Sometimes it pays to be average. A recent survey of 800 heterosexual women has revealed the preferred penis size for a partner — and it’s good news for fellas fearing their member mightn’t measure up.

According to the study published in the British Journal of Urology International, the official average length of an erect penis is 5.16 inches (13.12 centimeters) and 3.6 inches when flaccid. Want to ...

Yes, penis size is genetic, but it can still vary a lot within families. Genetics, hormones, and early nutrition can influence penis size. Race and masturbation do not affect penis size, despite ...