What is average penis size?


When does the penis stop growing?

Usually, the penis stops growing after 17 years old, at the end of the juvenile period. The male reproductive system starts its development at the age of 9 and ends at 14 years old.

Normal development is indicated by:

  • hairs on the pubis and face;
  • intensive growth of the penis (not only in length but in girth);
  • development of the foreskin;
  • skin changes in the scrotum area and on the penis;
  • testis enlargement.

Normal penis size mainly depends on the sexual maturation of a man when he was a boy, whether he had any anomalies of development. We speak about arrested sexual development when a boy does not have the aforementioned signs at the age of 14. In some cases, developmental delays are physiological and associated with individual characteristics of the body. In this situation, the penis will grow to its average size only later.

The pathologic developmental delay is associated with diseases and reproductive system anomalies. The normal size of the penis is less important here than hormonal imbalance which leads to infertility or to the development of the adult female secondary sexual characteristics.

What does the size of the penis depend on?

There are 5 stages in the male body development which influence the size of the penis.

  • Infantile stage. It starts from the moment of birth and lasts until puberty (10-13 years old). During this period, the growth of the penis and testicles occurs due to the growth of the entire body. The average penis size at this age is 4-6 cm when flaccid.
  • Hypophysial stage. Intensive transformations in the body occur during this stage caused by the production of hormones. At this age (beginning of puberty) an intensive growth of genitals begins.
  • Sexual gland activation. This period is characterized by the appearance of the secondary sexual characteristics and very rapid growth of the penis.
  • Intensive activity of the gonads. This stage occurs between 12 and 14 years old and is characterized by final changes in the appearance of a boy, voice break and other physical signs. The penis grows in length and girth and a boy experiences his first erection and ejaculation. The normal size of the penis is virtually final.
  • The end of the sexual maturation. All the processes in the body of a boy come to an end. His secondary sexual characteristics are completely developed. The penis stops its growth at the end of this stage which occurs at about 17 years old.

Average penis size in children and teenagers

Parents and boys themselves can use the following information about the average penis size to assess correctly their physical development at different age:

  1. 11 years old – 4-6 cm in length when flaccid, erection is not possible;
  2. 13 years old – the average erect penis size is 13 cm (variations are possible) and in girth it is up to 10 cm;
  3. 15 years old – the penis is 2 more cm longer and 1 more cm bigger in girth;
  4. 17 years old —  the average erect penis size is17 cm and in girth is 12 cm.

These are the average numbers and minor deviation does not indicate any pathology.

What penis size is normal?

According to the statistics, the average penis size of an adult man has been calculated:

  • Up to 8 cm is a pathologically small penis (micropenis). It occurs very rarely and considered to be an anomaly;
  • 8-12 cm is a small penis;
  • 12-15 cm is an average penis and majority of the men have the penis of this size;
  • Over 15 cm is a large penis;
  • Over 20 cm is a huge penis and it occurs very rarely as a micropenis.

These figures do not show what size of the penis is optimal for sex. However, if the penis size is more than average, a man can have problems with the erection because a lot of blood is required for it. Overweight also has its impact on the penis size.





What penis size do women prefer?

Men with a large penis are not worried about it as they think that women will be delighted at the size of their penis. The size of the penis is important because every woman has a different size of the vagina.

It turned out that the penis size by itself does not play any role. What is important is that it should match the size of the vagina. In the norm, the length of the vagina is from 7 cm to 13 cm and it is able to stretch.

The matter is, that even a small penis will be a problem if a woman has a small vagina. A large penis will cause only discomfort and pain to a woman during sex.

So men should not worry about the penis size and that they will not be able to satisfy a girl. They should just find a suitable partner. By the way, for men with a large penis, it’s more difficult to find a suitable partner.