What Science Says About Average Penis Size: Facts You Should Know

Sexual organs such as the penis grow during puberty, which usually begins between the ages of 9 and 14 and continues for the next 5 years. This means that by the time you reach the age of 20, the penis has grown to its maximum size.

If you are wondering what the average penis size is at this age, the answer may surprise you. Most men believe that the average size of the penis in an erection is 15.24 centimeters (6.0 inches) or more. There have been a few studies in the last decade in which the true size of the penis was measured by health experts using standard procedures. According to one of these studies, the average penis size in different states is:

• Flexible penis length: 9.16 cm (3.61 inches)
• Flexible penis length: 13.24 cm (5.21 inches)
• Fully erect penis length: 13.12 cm (5.17 inches)
• Fully erect penis girth: 9.31 cm (3.67 inches)
• Erect penis girth: 11.66 cm (4.59 inches)

Note that flaccid penis size is not a sign of how big it will be when erect. Small flaccid penises are longer when hard than larger penises.

What is a micropenis?
A micropenis works just like any other penis, but it is smaller in size, measuring just under 3.67 inches when stretched. It is estimated that only 0.6 percent of men in the world have a micropenis. Hormones or genetics can prevent the penis from growing larger. Most commonly, if the fetus does not receive enough testosterone during pregnancy, the penis remains small in size.

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To measure the size of the penis, place the measuring tape at the point of the penis where it is connected to the testicles. After this, take the tape to the upper end of the link. Keep in mind that the link has to be measured from the bottom and not from the top. On average, the erect penis size is 5 inches i.e. 13 centimeters long. Similarly, the thickness of the penis is measured. For this, wrap the tape on the middle part of the penis, which is the thickest. In this way you will know the exact thickness of the penis.

A matter of particular concern for some men is whether the size of their penis will be able to sexually satisfy the partner or not. Some men may also be worried that a small penis may ruin their sex life during intercourse, while according to research, a larger penis size may not always be better. Too big a size can cause pain during intercourse or sometimes it can be a cause of fear for women. Usually the shape and size of the penis varies. The average length is considered to be 12.9 to 13.97 cm. According to some research, even a 3-inch penis size after erection is enough to satisfy women. Research also found that there is no relationship between age and penis size.

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Study For Penis Size

What should be the normal size of penis? Men are very worried about this. The purpose of this study is to estimate the length and thickness of the penis of Indian men and compare the results with the numbers of other countries. This study was done on 301 men with and without erection. The length and thickness of the penis of 93 men were measured with erection. In which the average length without erection was 8.21 cm, and with erection the length was 10.88 cm and thickness was 9.14 cm. And when it was measured with other countries, significant differences were found in length and thickness.

Study - A study was conducted to measure the length of the penis. The aim of this study was to determine the average penis length. A total of 1132 men were included in the study and their age, height and weight were noted. The penis was measured between 10:00 am and 4:00 pm in room temperature with the men standing and the penis parallel to the floor. The length of the penis was measured with a ruler with millimeter markings along the dorsum of the penis from the pubopenile junction to the tip of the glans and was maximum, but painless. The length of the penis was measured both with and without an erection. The average age of the men included in the study was around 20 to 30 years. And the average length of the penis in erection and without erection was between 9 to 15 cm respectively. The average length of the penis with an erection was around 5.5 cm which is less than the average flaccid penis length.

Penis size tends to change throughout a male’s life, with significant variations during puberty, adolescence, and adulthood. During puberty, typically between ages 9 and 16, the penis undergoes substantial growth, reaching its full adult size by age 18-21. The growth is often associated with hormonal changes, particularly the increase in testosterone. Research suggests that the average adult penis size ranges from 5 to 6 inches (12.7–15.24 cm) in length when erect, though this can vary. After puberty, the penis size generally remains stable throughout adulthood, although some men may experience slight shrinkage with age due to factors like reduced testosterone levels, erectile dysfunction, or general health issues. It's important to remember that size doesn't necessarily correlate with sexual satisfaction, and most variations in penis size are natural and normal.

The average flaccid penis size varies significantly based on age, health, and individual genetics. Generally, the average flaccid length for adult men is about 3.6 inches (9.16 cm), but this measurement can differ based on temperature, stress, and physical condition. In younger males, especially during childhood, the flaccid size may be smaller, as the penis is still developing. As males enter puberty (ages 10-14), the flaccid length typically increases alongside the onset of secondary sexual characteristics. For adult males, flaccid length remains fairly stable after full development. It’s important to note that factors such as ambient temperature can impact flaccid size, often causing the penis to shrink or expand in response to cold or heat. Additionally, the flaccid size is usually not a good indicator of the erect size, as some men have a larger flaccid penis but may not experience a dramatic increase in length when erect, and vice versa.

Penis girth, or circumference, is another important aspect of male anatomy that can affect sexual health and satisfaction. On average, the girth of an erect penis is about 4.5 to 5 inches (11.43 to 12.7 cm) in circumference, although this can vary widely. Girth measurements can be taken around the middle of the shaft, just below the glans (head) of the penis. For a flaccid penis, the average girth is typically around 3.6 inches (9.16 cm). It’s important to understand that penis girth, like length, varies from person to person, and many factors—such as genetics, health, and even psychological factors—can influence these measurements. Studies have shown that there is a correlation between girth and sexual satisfaction, though it’s crucial to emphasize that factors like communication, emotional intimacy, and understanding are far more significant for fulfilling sexual experiences. Having a girth within the average range is completely normal, and it’s essential to focus on overall health rather than comparison to averages or societal standards.

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The size of a man's penis is completely natural and there is no "perfect" size set for it. In an erect state, 12 to 16 centimeters of length is considered normal, and without an erection, the average penis length is between 7 and 10 centimeters. The important thing is that the penis should be tight and in perfect erection during intercourse. Most women also believe that it is not the size of the penis but the partner's love, sensitivity and ability to give satisfaction that matters more. So do not take unnecessary stress about the size of the penis.

It is almost impossible to increase the natural length of the penis permanently without surgery in healthy men. There are many oils, medicines and creams available in the market, which make big claims, but there is no solid evidence of them scientifically. Some exercises can improve the thickness or blood flow, due to which the penis can look a little fuller. The surgical options for increasing the length of the penis are expensive and risky.

The main reason for penis weakness is related to both physical and mental health. Mental stress, depression, anxiety, excessive consumption of alcohol and smoking, high blood pressure, diabetes, hormonal imbalance and heart diseases are the major causes of this. Also, poor diet, lack of sleep and lack of exercise can also reduce the efficiency of the penis. Many times, stress in relationships or lack of self-esteem also becomes the cause of sexual weakness. This problem can be improved a lot by maintaining regular exercise, nutritious diet, good sleep and mental balance.

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There is no specific food to change the natural size of the penis, but foods that increase blood flow and maintain hormonal balance can improve sexual health. Pomegranate, beetroot, spinach, watermelon, walnuts, almonds, eggs, garlic and ginger increase nitric oxide, which improves blood circulation. Eating foods rich in zinc, vitamin E and omega-3 fatty acids also increases energy and strength in the penis. In simple words, adopting a complete nutritious diet and avoiding junk food is very important for penis health.

To make the penis strong, it is necessary to pay attention to both physical and mental aspects. Do regular exercise, especially Kegel exercises which strengthen the pelvic muscles. Eat fresh fruits, green vegetables, protein-rich diet and drink plenty of water. Avoid stress, get good sleep and stop smoking and alcohol consumption. Do cardio exercises at least 4 days a week so that the blood flow of the whole body remains correct. Maintain confidence and if you still feel weak, consult a doctor without hesitation so that correct diagnosis and treatment can be done.

According to science, no oil can permanently increase the length or thickness of the penis. But a light massage with some oils can be beneficial to improve blood flow and keep the skin healthy. Coconut oil, olive oil, sesame oil and almond oil nourish the skin and can reduce inflammation or irritation. Some people also use mustard oil, but it is important to check the sensitivity of the skin before that. Remember — oil is only an auxiliary means, not a magical solution.

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Penis exercises are mainly done to increase blood flow and strengthen the pelvic muscles. The most popular technique is Kegel exercise — in this, the muscles that stop urine are contracted for 5-10 seconds and then released. Apart from this, in the jelqing technique, the penis is slowly pressed from the base to the tip with light hands so that blood flow improves. Some people also do stretching exercises in which the penis is gently pulled in different directions. Keep in mind, excessive pressure or forceful pulling can be dangerous.

Apart from genetics, many things can affect the size of the penis. Penis growth can largely depend on the increase in testosterone hormone during puberty. Usually, the penis starts growing between the ages of 10 and 14 and the size of the penis is set by the age of 21-22 years. The person's feet, nose, height and weight have not been seen to be related to the size of the penis. It is often believed that if the height is good, then the size of the penis will also be long, but this is just a myth. A research in Australia has also confirmed that age, length and weight have no relation to the size and shape of the penis.

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Penis size, like eye and skin color, is mostly determined by genetics. Studies have found another factor that is a strong indicator of flaccid penis size: height. Not surprisingly, your height is also affected by your genetics.

Hormones - Hormonal problems during pregnancy can affect the development of a male fetus, including his penis. This can happen if the pregnant mother is unable to produce enough human chorionic gonadotropin (hCG), a hormone that helps develop testosterone in the fetus. Abnormal penis size can also be caused by conditions that cause low testosterone levels. A more common condition called hypogonadotropic hypogonadism prevents the brain from making the hormones needed for the testicles to produce testosterone.

Nutrition - Not getting enough nutrients during pregnancy can cause the fetus' penis to not develop properly. Similarly, adolescents who do not get enough nutrition at the time of puberty may have delayed puberty, a condition that causes smaller testicles and penis.

Environmental chemicals - Many environmental chemicals, such as fertilizers, plasticizers, pesticides, and phthalates, can affect the growth of the penis in the fetus. This happens because they disrupt your endocrine system, which makes and releases hormones that help the testicles shrink normally.

There are many myths surrounding penis length. For example, many people believe that foot size and masturbation habits affect penis size. But research has found no evidence of this. There is also little evidence that links penis size to race or sexual orientation.

Hormone treatment, surgery and other techniques can be used to increase the size of a penis that is too small, i.e. less than a certain measurement. However, these treatments have many risks and side effects. According to research, there are 67 percent people who do not actually have a small penis size, but they have the illusion of having a small penis. Due to this, they even go for treatment, but most people are advised by the doctor not to do so.

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Every man's penis has a different shape and size and it grows at different ages and rates. During puberty, usually between the ages of 11 and 18, the penis and testicles grow more rapidly. The penis can grow up to the age of 21. Penis size often depends on genetics and other factors also contribute to it, including hormone failure such as testosterone. Some genetic conditions such as syndrome can reduce testosterone production in boys. Usually the size of the penis is up to 9 cm without erection and the average erect penis size can be around 13 cm to 18 cm (5in to 7in). If the size of the penis is smaller than this, then you should contact a doctor, only he can give you the right advice on what you should do in this situation.