What Is the Average Penis Size?

Human penises vary in size on a number of measures, including length and circumference when flaccid and erect


Many scientific researchers have attempted to answer the question that males — and females — worldwide want a clear answer about: What size is the average penis?

A lot of males experience anxiety about whether their penis is big enough and if it is going to satisfy a sexual partner.

This can influence a person’s self-confidence and self-image.

A 2019 study article notes that many men believe the average length to get an erect penis is around 15.2 centimeters (cm) or 6 inches (in). In reality, the average is a lot smaller.

While sizes vary widely, the average span is probably 12.9–13.97 cm (5.1–5.5 in), and probably toward the smaller end of this scale.

While results vary slightly, most studies estimate the average to be within this range.

In this article, we examine some details from several scientific studies to try and provide a realistic answer to this question.

For many, this will offer reassurance on what to expect of the average penis size.

When is the penis size too small?

Back in 1996, experts completed a study that resulted in a set of guidelines for when a person could require surgery for penis enlargement.

The analysis quantified the penile dimensions of 80 males before and after drug-induced erections.

The researchers concluded that the average penis size was 8.8 cm (3.5 in) when flaccid and 12.9 cm (5.1 in) when erect.

The analysis also revealed that the size of a person’s erect penis did not correlate with their flaccid penis size.

To put it differently, a penis might have different lengths when flaccid but comparable spans when erect. They also found no link between age and penis size.

The researchers concluded: “Only guys with a flaccid span of less than 4 cm (1.6 in), or a stretched or erect length of less than 7.5 cm (3 in) ought to be considered applicants for penile lengthening.”

Micropenis and buried penis:

Some folks are born with micropenis, when a penis is remarkably small, usually as a result of hormonal or genetic factors.

A micropenis fulfills the same acts as an average-sized penis, but individuals may feel disappointed with its appearance.

Hormonal therapy or operation can increase its size when a person wishes.

Occasionally, an average-sized penis may seem small due because there’s extra skin around it. Individuals can refer to this as a buried penis, and operation can solve it.

What is average or normal penis size?

Ongoing research continues to produce similar findings of penis size.

A 2014 review looked at measurements obtained by healthcare professionals for up to 15,521 males aged 17 and over.

The average measurements are as follows:

  • flaccid penis length: 9.16 cm (3.6 in) when stretched
  • flaccid penis girth: 9.31 cm (3.66 in)
  • erect penis length: 13.12 cm (5.16 in)
  • erect penis girth: 11.66 cm (4.59 in)

In 2014, researchers published findings from a study involving over 1,600 males in the USA. In this analysis, the average dimensions to get an erect penis were 14.2 cm (5.6 in) in length and 12.2 cm (4.8 in) in circumference.

The participants submitted their own measurements and received condoms in exchange. But, self-reported measurements are often undependable.

A 2019 analysis found that many men overestimate the size of their penis when self-reporting, especially if they’ve experienced sexual activity with someone else.

The study surveyed 170 college-aged males attending a human sexuality course. Results showed that those with sexual encounters with another individual were prone to overestimate than those without a mutual sexual experience.

The authors speculate that sexually experienced men possess a” greater awareness of masculinity, sexual competence, and prowess.”

In 2007, researchers in India produced a table listing findings on penis dimensions from several countries around the globe.

Of the 16 research cited from various countries, the earliest was carried out within a hundred years back and released in 1899.

They arrived at similar average penis lengths or spans:

  • flaccid lengths ranged around 7–10 cm (2.8–3.9 in)
  • flaccid circumferences ranged around 9–10 cm (3.5–3.9 in)
  • erect lengths ranged around 12–16 cm (4.7–6.3 in)
  • erect circumference based on only one study was approximately 12 cm (4.7 in)

How to measure a penis:

To measure penis length, press a ruler into the groin and measure from the base of the penis to the tip.

To quantify penis girth, wrap a measuring tape around the widest part of their penis.

Penis size: Do spouses care?

Some men worry about whether their penis size will live until the desires of a partner.

However, some older study suggests that penis length is not important for many female spouses.

In 1 study, 77 percent of guys who finished a survey said penis length was unimportant or totally insignificant, compared with 21% who declared it was important or very important.

Individuals who stated that span mattered to them also stated that girth, or width, was important.

In a different survey, 45 from 50 sexually active undergraduate females stated that penis width was more important to sexual gratification than penis length.

What size penis do women want?

A 2015 study asked 75 females to signify their penis size preferences using 3D printed models of 33 different dimensions.

Size overall affects sexual satisfaction ( the width and the length of a penis)

The options varied based on the essence of the relationship that participants were considering.

  • For long-term sexual partners, they chose a length of 16 cm (6.3 in) plus a diameter of 12.2 cm (4.8 in).
  • For one-time sex partners, they picked a span of 16.3 cm (6.4 in) and a circumference of 12.7 cm (5 in).

Overall, their desired size proved to be slightly over the averages found across studies.

What about homosexual males?

Health experts also have raised concerns regarding how stress around penis size influences gay males.

The Gay Men‘s Health Project, based in the Uk, surveyed 586 men. It found that 38 percent of respondents said their penis size causes them stress.

The project urges males to seek help if they have worries and to keep in mind that, like people, penises come in many shapes, sizes, and skin tones.

One expert suggests that the porn business may help promote a distorted picture of the perfect penis, resulting in anxiety relating to concerns about penis size.

When to seek penis enlargement?

Hormone treatment, surgery, and other techniques may increase the size of a very small penis.

Nonetheless, these treatments carry risks, and most individuals do not have a tiny enough penis to warrant these options.

Doctors do not usually recommend treatment unless a penis has a flaccid length of below 4 cm (1.6 in) or a stretched or erect length of less than 7.5 cm (3 in).

Experts highlight concerns about the number of males looking for surgery to lengthen their penis. Many times, these people overestimate how the size of an average penis.

In 1 study of 67 men seeking help for a brief penis, none were severely brief.

Based on a 2019 report, motivation for seeking treatment often targets self-image, fears of inadequacy, a desire to impress others, and other psychosocial factors.

A 2017 review notes that many people drop the idea of penis enlargement once they know the risks and potential treatment complications.

Impact of obesity and age:

In 2015, researchers from Saudi Arabia published a study between 778 men aged 20–82 years attending a urological clinic.

After clinically inducing an erection, the investigators took measurements, discovering, on average:

  • The Penis length was 12.53 cm (4.9 in) in the skin over the pubic bone into the penile tip
  • If Penis length was 14.34 cm (5.6 in) from the pubic bone into the penile tip
  • Penis circumference has been 11.50 cm (4.5 in)

The researchers also measured the participants’ body mass index (BMI), which increases with obesity.

There was a poor correlation between larger BMI and briefer erect penile length when measuring from the skin over the pubic region, but not when measuring from the bone into the tip.

This also implies that the penis appears shorter when there is more fat below the skin at the visible base of the penis. Weight reduction can often resolve this.

The researchers also found a small difference in size between males aged 20 years and people aged 70 years, but the gap was less than 1 cm.


Many men fret about the size of their penis, and this may impact their self-confidence and self-image.

Guidelines that many physicians follow when helping someone decide if they require treatment state the average size for a flaccid penis is 8.8 cm (3.5 in), whereas the average size for an erect penis is 12.9 cm (5.1 in).

Additionally, research indicates that small penises are comparatively rare. Anyone with concerns about their penis size should speak with a doctor or sexual health specialist, who will advise them.

Ask your friends and loved ones for support.

If you’re feeling anxious or depressed, consider joining a support group or seeking counseling. Believe in your ability to take control of the pain…

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