Unraveling Penis Size (Metric)

Perception of penis size has become very warped. This is the result of a number of factors, including the advent of pornography, photography, photomanipulation, and dishonest reporting of penis size. This site aims to convene and present all the tools that are useful for healing the warped perception one may have.

When one is looking to learn about the world, generalizations are fundamental. Those generalizations will be presented without citation. The strength of this site is not the interpretation of scientific data. You can always go look for the actual studies yourself; they are numerous. The general conclusions that can be agreed upon from the gestalt of all data and experience largely match the scientific data anyway.

Let’s begin with reality.

The global average penis size is 14 centimeters. Fourteen centimeters. One hundred and forty millimeters. 140 millimeters.

14 cm

14 centimeters

14 centimeters

14 centimeters

Yes. That’s it. Sometimes different averages come up, as you should expect when repeating random samples. Sometimes it’s 13 centimeters, sometimes it’s 15 centimeters. A study here and there might conclude 12.5 centimeters, or 15.5 centimeters. A human penis is typically about 14 centimeters long.

Measure yourself.

Yes, seriously. You may feel silly, you may think that it’s a very very dumb thing to do. Well, it turns out, it is a very very not dumb thing to do. It is good policy to know all your own measurements at least roughly, and your penis should not be excluded.

There is a right way to measure. It’s called erect bone-pressed length. To find it, induce as strong an erection as you can, stand up, lay a hard ruler flat along the top of your penis, and push the ruler in towards your pubic bone. Try to straighten out any curve you may have, but be gentle; it is possible to fracture your penis, though it is unlikely you could do it to yourself without meaning to. The farthest point the ruler reads is your standardized erect length.

If you do anything else, like measuring along a side or along the bottom, or reading the curve of a measuring tape down your glans, you are doing it wrong.

You should also find your erect girth. Use a measuring tape to measure the circumference of the thickest point of your penis, excluding the glans. You can also use a piece of paper or string and translate the measurement to a hard ruler. This is your erect girth.

What is the reality of penis size?

The chart below are how the statistics fall. This is a distribution chart. It has no y axis because it’s already understood that a higher y value represents a greater incidence of that x value. The x axis maps to bone pressed erect length.

The average is 14 centimeters. You can see that the range of penises generally includes everyone somewhere between 8 centimeters and 20 centimeters. Outside of this range are extremely rare outliers. You can see that the standard deviation is pretty tight at ~1.78 centimeters. You can see that plus or minus one standard deviation covers the lengths between 12.7 and 15.2 centimeters. This range of plus or minus one standard deviation covers 68% of the population. Think about that. Almost 70% of men have a penis between 12.5 and 15 centimeters, bone pressed.

new_length_chart

Plus or minus 2 standard deviations covers 95% of men. Think about that. How many men do you know? How many men do you meaningfully interact with in the course of a normal week? You’d have to look around to find a man who is the 1 in 20 who falls outside of that range of 10.4 centimeters to 17.5 centimeters. On reflection, 95% of men are inside of 10.2 to 17.8 centimeters.

Plus or minus 3 standard deviations covers 99.7% of men. You would have to search for a long time to find a man who is the 1 in 335 men who falls outside that range of 8.6 centimeters to 19.3 centimeters. And that’s on either side of that range. If you wanted to find a man who was on the large side, you would cut the probability in half; you’d be looking for the 1 in 666 men who is larger than 19.3 centimeters.

Let’s do it again for girth.

new_girth_chart

The average erect girth is 11.7 centimeters. You can see that the range of girths generally includes everyone somewhere between 7 centimeters and 16.5 centimeters. Outside of this range are extremely rare outliers. You can see that the standard deviation is even tighter at ~1.52 centimeters. You can see that plus or minus one standard deviation covers the girths 10.2 and 13.2 centimeters. This range of plus or minus one standard deviation covers 68% of the population. About 70% of men have a girth between 10 centimeters and 13 centimeters.

Plus or minus 2 standard deviations covers 95% of men. You’d have to look around to find a man who is the 1 in 20 who falls outside of that range of 8.6 centimeters to 14.7 centimeters.

Plus or minus 3 standard deviations covers 99.7% of men. You would have to search for a long time to find a man who is the 1 in 335 men who falls outside that range of 7.1 centimeters to 16.3 centimeters. And that’s on either side of that range. If you wanted to find a man who was on the thick side, you’d be looking for the 1 in 666 men who is thicker than 16.3 centimeters.

That can’t possibly be right!

Largely, yes, these are correct. Subjects who have micropenis or consider themselves exceptionally below average are usually excluded from studies, so they could not be dragging down the numbers.

On the off chance that you are surprised to find yourself at the outskirts of these numbers, believe it! And if it’s your girth measurement that’s outside the average, you may want to see if different sized condoms fit you better.

To automatically calculate where you fall along these distributions, visit https://calcsd.bitballoon.com/ .

Where do they find those giant porn dicks, then?

Most porn actors have penises somewhere between 15 centimeters and 20 centimeters. Yes, really. Even those who claim absurd lengths past 23 centimeters, are almost always misrepresented. With the right camera angles, good presentation and body type, and very small females, a 16.5 centimeter penis is passed off as 21 centimeters. Yes, really. A 16.5 centimeter penis is already big. Put up against a tiny female actress, the deception can be impressive.

Notice that no girth measurements are ever supplied by pornography. That is because if you are already clueless enough to believe their length claim, you have no idea what you’re doing in regards to penis measurements anyway.

Please visit https://pornmeasurements.tumblr.com/ for an in depth disillusionment of camera tricks in pornography.

Hands

The effect of differently sized hands on the apparent size of a penis is drastic but not well known. In the chart below, notice how a large male hand can be more than 10.2 centimeters wide, and a small female hand, like those of porn actresses, is smaller than 7.6 centimeters. See the comparison of a male large to a female small.

hand_chart

The result of this difference can be dramatic:

hand_size_small_femalehand_size_large_male

A certainly large penis, a 17.8×14 centimeter penis like the one pictured above, can look mostly unimpressive in a large male hand. In a small female hand, it can appear sensational.

Body Size

Height and body type can have the same effect on apparent penis size. A large penis will look commonplace on a large man. It will look shocking on a small ectomorph.

height_simulation_spectrum.jpg

The upper and lower extremes were included to emphasize the effect.

5’0″ = 152 cm; 80 lbs = 36.3 kg
5’5″ = 165 cm; 110 lbs = 50 kg; 135 lbs = 61 kg; 170 lbs = 77 kg
5’9″ = 175 cm; 130 lbs = 59 kg; 160 lbs = 73 kg; 200 lbs = 91 kg
6’4″ = 193 cm; 175 lbs = 79 kg; 215 lbs = 98 kg; 270 lbs = 122 kg
7’0″  =213 cm; 450 lbs = 204 kg

Understanding Sizes

Most people have a terrible understanding of what these sizes can actually mean in the real world. Girth in particular is more obscure. A few Reddit users were helpful enough to show us how these numbers play out.

We begin with the control. Her hands are 9.2 centimeters wide, which is a female large in our earlier chart.

hand_grith_control

Here is a girth of 7.6 centimeters:

hand_girth_3_in

Here is a girth of 10.2 centimeters:

hand_girth_4_in

Here is a girth of 11.4 centimeters:

hand_girth_4.5_in

Here is a girth of 12.7 centimeters:

hand_girth_5_in

Here is a girth of 14 centimeters:

hand_girth_5.5_in

Here is a girth of 15.2 centimeters:

hand_girth_6_in

Here is a girth of 16.5 centimeters:

hand_girth_6.5_in

Here is a girth of 17.8 centimeters:

hand_girth_7_in

Penises are not perfectly circular, of course, but this serves as a guideline.

Another Reddit user offers us a look at how these girths appear next to her body of 163 centimeters and about 50 kilograms.

We begin with the control:

ladygirth_control

Here is a girth of 10.2 centimeters:

ladygirth_4_in

Here is a girth of 11.4 centimeters:

ladygirth_4.5_in

Here is a girth of 12.7 centimeters:

ladygirth_5_in

Here is a girth of 14 centimeters:

ladygirth_5.5_in

Here is a girth of 15.2 centimeters:

ladygirth_6_in

Here is a girth of 16.5 centimeters:

ladygirth_6.5_in

Here is a girth of 17.8 centimeters:

ladygirth_7_in

Here is a girth of 19 centimeters:

ladygirth_7.5_in

This is what a girth of 20.3 centimeters looks like, presented for completeness since it is not a possible penis girth:

ladygirth_8_in

She additionally offered: 85 cm bust, 60 cm waist, 91 cm hip, [10C aus; 32C uk; 70D europe; 85D belguim] bra size.

The average female height is just under 162 cm. The average male height is 175 cm.

Another Reddit user gives us a comparison to what appears to be a slightly larger woman:

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More size and perspective

A good way to visualize the variety of penises is with cylinders. Remember that a cylinder will typically contain all of the penis described by its measurements, so there can be a lot of volume not filled in the cylinder by a penis.
cylinder_family.jpgSmallest: 9.5cm*7.6cm, 11.4cm*9.5cm, 14.6cm*11.9cm, 17.8cm*12.7cm, 20.3cm*15.2cm :Largest

The large cylinder below is 17.8 centimeters by 14 centimeters, and the small one is 14.2 centimeters by 12.2 centimeters, an average penis.

cylinder_duo

What follows is a focus on the larger sizes and how they can be made to appear even larger using simple perspective tricks. Pictures are an 8.4oz (250ml) Redbull can, a 16oz (475ml) Monster can, and a 24oz (710ml) Monster can, among other things.

Below: Smallest: 17.8cm*12.7cm, 19cm*14cm, 20.3cm*15.2cm :Largest
cylinder_trio

Again, using simple tricks of perspective, anything can be made to appear big:

And that’s penis size.

If you’d like to see actual penises measured, visit https://www.reddit.com/r/penismeasured/ . There are a larger percentage of larger penises because those men are more likely to show them. Many are also being measured incorrectly. Some are still utilizing perspective tricks.

If you need to see what average penises look like in a pornographic context, visit https://www.reddit.com/r/realitydicks/ .

Hopefully by now your brain is beginning to heal from the wound pornography inflicted on you. There is a great deal to be said about how damaging pornography is to the consumer. It is recommended that you not consume pornography at all.

What are the sources of the misconceptions?

When filmed pornography became popular, it was more expedient to use a subject with a larger penis, as it made it much easier for the camera, and therefore the viewer, to see what was going on. This effect appears to have snowballed, embedding itself in American culture in particular, and through it, the world.

The modern evolution of pornography can feature claims of absurd lengths such 28, 33, 38 centimeters or above. Such claims are physically impossible, and would be totally unworkable.

Claims that 17.8 centimeters or 20.3 centimeters are average are usually jokes, and also absurd.

Most people have not developed the skill of estimating sizes without a ruler. That leads to jokes such as this one:

girl_inches_conversion_ruler.jpg

Dildos

Dildos can seem enormous as well. They do tend to be large, but that is in order to make the product viable for a larger range of customers. The video below helps provide perspective on the true consumption of these products.

The dildos are long because the woman is free to insert however much she sees fit and at her own pace. A dildo of 15.2 centimeters is a very different experience to a penis of 15.2 centimeters attached to a man’s body. What appears to be more important is the dildo’s girth.

Dildos are marketed and sold as perhaps 17.8 centimeter or 22.9 centimeter dildos, but that is the measurement of the overall product. The insertable length of the dildo is usually about 5 centimeters less by design, due to the modeled testicles or suction cup or what have you.

Race

The idea that black men have larger penises is entirely a fabrication of the pornography industry. There is no data to suggest such a thing is the case. Studies that have show this are based on self reported data. Of the usable studies that have examined penis size by country or race, it is typically found that European nations, i.e. white men, have the largest penises, though not by much–perhaps 15.5 centimeter averages in those countries where black males showed 13 centimeter or 13.7 centimeter averages.

Asians do show lower averages as well, in far east and Indian subcontinent, though again not by much–perhaps averages of 12.4 centimeters or 13 centimeters.

The averages do differ a bit by race, but not by much. Statistical inductions apply only to the population and not to individuals, as they still vary widely, and observations about an individual apply only to the individual and not the population.

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