What is Normal or Average Penis Size?

What is the normal or average penis size? One global study of 15,000 men found that the average flaccid penis is 3.6 inches long and has a girth of 3.66 inches. In the same study the average erect length was 5.16 inches, and the girth was 4.59 inches.

Average measurements were:
Flaccid Length: 3.6 in
Flaccid Girth: 3.66 in
Erect Length: 5.16 in
Erect Girth: 4.59 in

Another study of American men had similar results, with an average self-reported erect length of 5.6 inches and a girth of 4.8 inches. Self-reported sizes can be unreliable (duh!), so let’s look at some professional measurements.

In a study where men were measures by medical professionals the average penis length was 3.5 inches flaccid and 5.1 inches erect. The study also found that the size of the erect penis did not correlate with flaccid length. Science has proven that saying: “I’m a grower, not a shower.” It’s the truth.

Yet another study involving almost 800 men undergoing medically induced erections found the average penis length was 5.6 inches from the pubic bone to the penile tip, and penis girth was 4.5 inches.

Interestingly, a 2020 study found that when asked most men believe the average erect length is 6 inches, when in fact, the average is much smaller at 5.16 inches. This means that most guys overestimate their penis by almost an inch!

Penis Size Calculator

The Penis Size Calculator provides you with a comparison of your penis against standardized data from various world regions. By entering the length and width (girth) of your penis, you can see how you compare.

ERECT LENGTH

Measure from the base to the tip on the top side, in inches or centimeters.

ERECT GIRTH

Measure the circumference or girth, typically measured around the thickest part, in inches or centimeters.

ERECT VOLUME

fl oz

Number of people in a room

Does Penis Size Vary by Nationality?

Interestingly, penis size averages don’t vary much around the world. Research from various countries shows flaccid lengths range from 2.8 to 3.9 inches, while erect lengths are between 4.7 and 6.3 inches.

Average measurements were as follows:
Flaccid Length: 2.8–3.9 in
Flaccid Girth: 3.5–3.9 in
Erect Length: 4.7–6.3 in
Erect Girth: 4.7 in

What is the Reality of Penis Length?

This chart shows a distribution of penis sizes. The average erect length is 5.5 inches. Almost 100% of men fall between 3 and 8 inches. Sizes outside this range are very rare.

Let’s talk about standard deviation. Standard deviation is a way to measure how spread-out sizes are from the average. In the case of penis length, the standard deviation is about 0.7 inches. This is a quite small. Meaning there is not a lot of difference in penis size between men.

When we say, “plus or minus one standard deviation,” we mean 0.7 inches above and below the average. So, one standard deviation covers lengths between 5 and 6 inches. This range includes about 68% of men. In other words, almost 70% of men have a penis length between 5 and 6 inches.

Plus or minus 3 standard deviations: This includes 99.7% of men. It means you’d have to search for a long time to find someone outside the range of 3.4 inches to 7.6 inches. Only 1 in 666 men are larger than 7.6 inches.

Plus or minus 2 standard deviations: This includes 95% of men. Imagine all the men you know or interact with in a normal week. You’d have to look hard to find someone outside the range of 4.1 inches to 6.9 inches. That means 95% of men fall within 4 to 7 inches.

Length SD Explained

Girth SD Explained

What is the Reality of Penis Girth?

Let’s look at girth measurements and how you compare:

Average erect girth is 4.6 inches. Most men fall between 2.8 inches and 6.4 inches, with sizes outside this range being very rare.

So again, let’s consider standard deviation for girth. Think of standard deviation as a measure of how spread-out sizes are from the average. For girth the standard deviation is 0.6 inches. This is a small range, smaller than for length.

Plus or minus 1 standard deviation: This means 0.6 inches above and below the average girth. One standard deviation covers girths between 4 and 5.2 inches. This includes 68% of men. In other words, about 70% of men have a girth between 4 inches and 5.2 inches.

Plus or minus 2 standard deviations: This covers 95% of men. Imagine all the men you know. You’d have to look around for a awhile to find someone outside the range of 3.4 inches to 5.8 inches. 95% of men fall within the range of 3.4 to 5.8 inches in girth.

Plus or minus 3 standard deviations: This covers 99.7% of men. It means you’d have to search for a long time to find someone outside the range of 2.8 inches to 6.4 inches. Only 1 in 666 men are larger than 6.4 inches.

How to Measure Penis Size Correctly?

If you’re curious about your own size, here’s how to measure it correctly. The correct way to measure is called erect bone-pressed length. For length, press a ruler against your pubic bone and measure from the base to the tip of your erect penis. For girth, wrap a measuring tape around the widest part. Accurate measurements are crucial!

Do Partners Care About Penis Size?

Worried about your length? Don’t be! Studies show that most women don’t consider penis length important. In fact, girth matters more for sexual satisfaction. In a survey, 77% of women said length wasn’t a big deal, while 4 out of 5 women preferred girth over length for better sexual satisfaction.

Preferences for Penis Size

So, what do women want in a penis? A 2015 study asked women to choose from 3D-printed penis models of various sizes. The models ranged in size from 4–8.5 inches in length and 2.5–7 inches in circumference. Interestingly women had different preferences when they considered a long-term partner vs a one-night stand. For long-term partners, the preferred length was 6.3 inches with a girth of 4.8 inches. For one-time partners, they preferred slightly larger sizes. It turns out preferences for one-time partners was a length of 6.5 inches and a girth of 5 inches. Bigger than the average guy and what they want in a long-term partner.

Size Preference:

Long-term partners:
6.3 Length
4.8 Girth

One-time partners:
6.5 Length
5 Girth

What About Gay Men?

Anxiety about penis size isn’t just a straight issue. A survey in the UK found that 38% of gay men worry about their size. A survey of more than 550 gay men by the Gay Men’s Health Project found that 49% think size does not matter, however 37% of guys said it did and 51% of guys says a partner’s size affected the kind of sex they had.

Impact of Obesity and Age on Penis Size

Did you know that your weight can affect how your penis looks? A higher BMI, or more weight can make your penis appear shorter because of extra fat around the base. Losing weight can improve its perceived length. Age also has a slight impact, but the difference is usually less than 1 cm so very minimal.

Race and Penis Size

Do black men have bigger penises? The idea that black men have larger penises is a myth created by the pornography industry. There is no scientific data to support this claim. Studies that suggest otherwise often rely on self-reported data, which can be unreliable.

In the reliable studies that have examined penis size by country or race, European nations (predominantly white men) tend to show slightly larger averages, around 6.1 inches. In comparison, studies show black men with averages around 5.1 to 5.4 inches.

Asian men, particularly from the Far East and Indian subcontinent, tend to have slightly lower averages, around 4.9 to 5.1 inches.

While there are some differences in average sizes by race, they are not significant. It’s important to remember that these averages apply to populations, not individuals. Penis size can vary widely among individuals, regardless of race. Observations about an individual do not represent their entire racial group.

Frequently Asked Questions

What is an Average Size?

Is 4.5 inches erect a good size?
Is 5 inches erect a good size?
Is 5.5 inches erect a good size?
Is 6 inches erect a good size?
Is 6.5 inches erect a good size?
Is 7 inches erect a good size?

ANSWER:

The average length of an erect penis probably ranges from 5.1 to 5.5 inches.

Do You Ask Yourself These Questions?

At GetMoreGirth, we are a leading provider of innovative penile enhancement solutions designed to help individuals achieve their desired girth and width.