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Average Penis Length & Circumference Size
Average Man’s Penis Size Inches Length Thickness
“How thick is an average penis?” The average thickness is 4.8 inches or 12.23 centimeters.
A lot of medical studies provide different results, mostly rooted within patient self-reporting vs. studies where a clinician derived the results. Men visiting the Rejuvall ask about average size in both thickness and length as it is natural to compare to others. A (2014) study performed by the National Institute of Health (NIH) which included over 1,600 men is often quoted when it comes to average penis size statistics. However, like so many before it, results were derived from “self-measurement”. As most men inherently understand, if a man is ever going to exaggerate about anything, it would be about the size of his phallus.
Thus, Rejuvall® chooses to only reference studies and statistics where results were tested and tabulated by clinicians rather than self-reporting. Even those studies have admitted social bias as participants sometimes pushed back on how measurements were performed.
How are such studies able to accurately measure erect penile length? They administer an injectable urologic drug that’s used during penile ultrasound tests called Prostaglandin which automatically triggers an erect state. This drug is also prescribed to men with severe erectile disfynction issues and is also known as “TriMix” (a blend of related drugs) or “penile injections”.
 Erect penile length and circumference dimensions of 1,661 sexually active men in the United States, Debby Herbenick, et al. J Sex Med. 2014 Jan;11(1):93-101. doi: 10.1111/jsm.12244. Epub 2013 Jul 10.
Intracavernous prostaglandin E1 in erectile dysfunction, LL Neff, Clin. Investig. 1994 Jan;72(2):139-49. doi: 10.1007/BF00184593.
 Intracavernous prostaglandin E1 in erectile dysfunction, LL Neff, Clin. Investig. 1994 Jan;72(2):139-49. doi: 10.1007/BF00184593.
 Why a combined intracavernosal injection with trimix and oral sildenafil is reliable therapy in the ultrasonographic evaluation of erectile dysfunction, Jong Kwon Park, et al.
BJU Int. 2008 Sep;102(8):993-7. doi: 10.1111/j.1464-410X.2008.07712.x. Epub 2008 May 12.
Average Penile Length Adult Men Ages 18 and Over
While thickness is critical to many, length is the general measurement used for comparisons of penis size among adult men. When someone asks: “How big are you?”, that query is directly tied to your penile length.
Most men assume the typical length of an erect penis, according to most males, is 6 inches or greater (15.24 cm). This mindset is based in part on numerous well recognized studies that used self-reported measures, with heterosexual males measuring roughly 6.2 inches (15.75 cm) and gay men measuring even more. Thus, the “pop culture” basis for average penis length became six inches over time.
A 2021 study that only drew from 21 different penis size studies where researchers performed measurements, the mean was approximately 5.11 inches (12.98 cm; n = 13,719). Based on these studies, the average length of an erect penis is between 5.1 and 5.5 inches (12.95-13.97 cm), but after taking volunteer bias into account, it is probably toward the lower end of this range. Studies show that a majority of men wish they were larger.
So how long is an average penis? According to the data, the average erect penis length is between 5.1 and 5.5 inches 5.57 inches (12.95-13.97 cm), and the lower end of that spectrum is most likely.
With everyone thinking they are too small what in actuality is the size of a small penis. To be considered a micro penis you must be two standard deviations below the average penis size. An adult male with a penis shorter than 2.8 inches is considered to have a micropenis. While only a small percent of the male population should be concerned with this, having a micro penis is not easy.
Men must keep in mind that everyone is different and flaccid penis length is not always a clear indicator of erect penis length. Many men who have a smaller flaccid size do not have a problem achieving a normal erect length. The size of your erect penis can actually depend on the type of stimulation used for your erection, time between sex, diet, and whether or not you smoke. Starting at birth a flaccid penis measures under 1.57 inches and grows as the life cycle progresses. But as time goes on and a man is still uncomfortable with his size there are other options he can explore.
Average Penile Circumference Adult Men Ages 18 and Over
Penis size is a topic that’s been on most guys’ minds since childhood. The peer to peer size comparisons start early in places like the locker room, the gym, and in the showers. Men often measure themselves with a flexible measuring tape in both flaccid and erect states to see where they stand against their male peers. This self evaluation carries over into the bedroom as boys become men with concerns about how a female love interest will evaluate the size of their manhood. When men consider penis size, they often think of length first, although circumference or width can be just as important in sexual intercourse. Men often research what is the best way to achieve a permanent extension or thickening. Elongating and widening a penis permanently is often the best remedy for men who desire enlargements. Inches can be gained in width and length when flaccid or erect, in one procedure. Rejuvall has some of the best penile surgeons in the country.
Am I big enough? Is she going to think I’m too small? This type of distress and concern is all because penis size is equitable to a man’s ego. A lot of his pride is measured by the length and width of his penis. Having to constantly compare and contrast your size to other guys is not easy. Nowadays thanks to the booming pornographic industry and our over sexualized world, penis size is becoming overwhelmingly something that many men want to change about themselves.
Rejuvall provides 33 Different Penis Enlargement Procedures in order to ensure a suitable enhancement for every man regardless of shape, existing penis size and health conditions.
We take you from undersized to hung.
As noted, studies that calculate average size show a wide range for average penile thickness, where self-measurement responses are the basis for reaching the average.
As discussed previously, studies show a wide range for average penile thickness with studies where self-measurement responses were used.
The average circumference or width of an erect penis is 4.8 inches thickness (12.23cm). And in a flaccid state, the average penis circumference is 3.6 inches (9.16cm) in length and has a girth of 3.7 inches (9.31cm). Flaccid state size measurements can vary widely based upon factors such as temperature, man’s weight or obesity, and vascular health.
How Do Men Increase the Thickness of Their Penis?
How do you increase the thickness of your penis?
Surgery and outpatient procedure options are the most effective way to increase penile thickness, unless you have Micropenis or are overweight. Increasing penile thickness in those cases ends up making it appear even smaller.
Whether you feel you are undersized or you simply want to have a larger than average penis size, Rejuvall Men’s Clinics offers effective procedures for maximum size increases.
Suggestions like hormone therapy or Viagra are only helpful if your root cause relates to those potential aspects of erectile dysfunction.
The penis stops growing in both circumference and length when a man completes puberty, generally no later than age 18.
Most women assume the average is six inches based upon pop culture, which leaves lots of men feeling unfairly inadequate at the onset.
Penis Size: What Matters to Men?
Penis size is evaluated in two states: erect and flaccid. An erect penis matters when sex is involved. Flaccid is important for the “everyday confidence” associated with penis size: How is it hanging when walking around the house naked, at the gym, etc. The flaccid state of the penis plays a big role in male self-confidence around both men and women. Penis size, both erect and flaccid, can be compared to how women feel about their breast size. Nobody wants to feel below average. Permanent penis enlargement from surgery results in an increase in both circumference and length, flaccid and erect. The expected gain is 1-2 inches in both thickness and length with our in office surgical procedure.
What is normal when it comes to penis size? In a study published by The Journal of Urology titled “Penile Length in the Flaccid and Erect States: Guidelines for Penile Augmentation” the average penis size was measured. The mean flaccid length recorded was 3.46 inches and an erect length of 5.08 inches. This may come as a shock because most men believe you must be at least 6 inches to be considered normal. In many studies it has been shown that at least 50% of men are unsure of themselves when it comes to their penis size. With all of this uncertainty there is a trend towards an increase in penis enlargement surgery.
What’s the perfect penis to a woman?
What would a perfect penis look like if a woman could design it? A study published in the journal PLOS One attempted to answer this exact question. Researchers used 3D printed models to ask 75 women to choose from 33 different-sized models to indicate their penile preferences.
For a quality long-term relationship, women are willing to accept less size.
The subsequent commentary from this published report was eye-opening.
Unlike males, who are infamous for exaggerating their penis size, women appear to associate a smaller penis with a better long-term mate. Several women mentioned how difficult it was to find a man who was attractive, a good provider, loyal and faithful, and who they thought would be a good father to children, as well as being well hung. In the long run, they chose the former over the latter.
Women are willing to accept less size in exchange for a higher quality long term relationship
Whereas men notoriously embellish regarding their penis size, women seem to equate a smaller penis with a better potential long-term partner. In the commentary following this study, several women cited how rare it was to find a man they found attractive, a good provider, seemingly committed and faithful and who they thought would be a good father to children, who was also well hung. They prioritized the former over the latter in the long term.
The study found that ideal size was different based upon the nature of the relationship. They expected a larger penis for one-night stands than with long term committed unions.
Long-term partners should be 16 cm (6.3 inches) long and have a girth of 12.2 cm (4.8 inches), whereas one-night stands should be 16.3 cm (6.4 inches) long and 12.7 cm (5 inches) wide. Both these preferences are larger than the average penis size. Size needs tended to increase with a female’s age.
Does Penile Width or Girth Most to Women in Sexual Satisfaction?
Studies show that girth is more important than length when it comes to female pleasure. In a survey conducted by the University of Texas-Pan American, 50 sexually active female undergraduate students were asked which felt better, was penis width or length more important for their sexual satisfaction. 45 out of 50 (90%) of these sexually active women responded that when it comes to sexual satisfaction, penis width was more essential than length. None reported they did not know, or that width and length were equally satisfying. The reason these women felt width was more important was unknown to them, but it is likely related to clitoral stimulation that occurs with a thick shaft when a having sexual intercourse
Among the women who claimed penile length was “essential” or “very important” for good sex, 85% also emphasized the relevance of girth in the Dutch study mentioned previously.
A new study finds that women who have frequent vaginal orgasms are more likely than other women to say they climax more easily with men with larger penises. Women who tend to prefer penile-vaginal intercourse over other types of sex also say the same, researchers reported online in The Journal of Sexual Medicine.
Women over the age of 35 years old were more concerned with added thickness than younger women.
Clearly, girth appears to matter most when it comes to female pleasure.
“Male anxiety about penis size may not reflect internalized, culturally arbitrary masculine stereotypes, but an accurate appreciation that size matters to many women — just as men feel legitimate anxiety when they enter the mating market about their intelligence, personality traits, sense of humor, social status, height, wealth, and other traits known to be favored by women across cultures,” study researcher Stuart Brody, a psychologist at the University of the West of Scotland, told LiveScience.”
Penis Inches Circumference vs Length
The width and girth of the penis refers to the circumference of the penis. Girth enhancement refers to a thickening of the width of the penis, or an increase in penile circumference.
At Rejuvall, we don’t make you choose like other male clinics do– you can get both length and width with our wide variety of procedures!
Penis Size: Survey of women’s perceptions of sexual satisfaction
To test the notion of the possible importance of length inches and width in sexual satisfaction for women, a study was performed by researchers at the University of California. The study looked at women’s preferences for size and found that for one time encounters they preferred a slightly larger length and thickness to a long-term partner in which they preferred a slightly smaller length and width. A second study interviewed 50 women on their preferences and found that thickness mattered more than length in sexual satisfaction. The results and details are listed below.
Study Results Penile Size – Inches Satisfaction
In the second study, the women college students questioned ranged in age from 18 to 25 years old. In person or via telephone, the females were asked “In having sex, which feels better, length of penis or width of penis?” In half the cases, the word “width” was used before the word “length,” but there were no order effects. There were also no effects for telephone vs. personal interview. All female participants answered the question, perhaps because they personally knew the student asking the question.
 Journal of Sexual Medicine, (D. Herbenick, . Reece, V. Schick, S. Sanders) Epub 2013 Jul 10
Circumcised vs. Uncircumcised Penises: Does it Matter with Penis Enlargement?
The foreskin is a retractable layer of skin that covers the penis head/glans of men’s penises.
Male circumcision is a medical surgery that removes the foreskin from the head of the penis. It is most typically performed shortly after birth. Uncircumcised men account for 62 percent of the male population worldwide. In the United States, however, over 80% of men are circumcised.
The glans is always visible since circumcised penises no longer have a foreskin. The glans is frequently covered by the foreskin of an uncircumcised penis, especially when the penis is flaccid.
Phimosis is a condition in which the foreskin is unable to retract over the glans hood in uncircumcised men. This might result in irritation as well as infection, requiring medical attention.
Any type of penile thickening requires a circumcision three months before the girth enhancement. Unfortunately, circumcision and length or girth expansion cannot be done at the same time. If a penis is thicker while uncircumcised, the risk of contracting phimosis doubles 400%. Circumcision is not required for length-only patients unless they wish to be circumcised.
Infant circumcisions can sometimes cause girth enhancements to recover more slowly (20% of cases), especially with surgical girth enlargements.
Potential healing delays from circumcisions performed just after birth
Most circumcisions are performed just after birth by the delivering physician. For the sake of speed, infancy circumcisions are performed by pulling the foreskin back away from the glans and cutting away the excess skin along the penile shaft.
Looking down at your penis when flaccid or erect you will notice a “lighter” toned skin coloring in the area closest to the glans (head) of your penis if your circ was performed just after birth. This is called the “inner prepuce”, it’s a less dense and less durable dermis than typical penile shaft skin since it was previously situated beneath the outer foreskin before that was trimmed away.
The Issue: A Hidden Scar Line
Anytime an incision is made into the epidermis, a scar forms during healing. With deep incisions, the scar often remains visible upon the outer skin. With minor incisions like those performed during an infant circumcision, the scar becomes invisible, but it remains beneath the skin.
None of this mattered until the advent of penile girth enlargements. The prepuce skin in the distal portion of the penile shaft has no impact on sexual performance or sensitivity.
We discovered that infancy circ scar lines slow the healing process in about 20% of patients getting a penile girth enhancement. The degree of recovery delay is based upon how deeply the delivering physician cut into the tissue surrounding the penis organ when performing the circ.
Unfortunately, an infant circumcision cannot be reversed and there’s no way for us to appraise the depth of the original incision prior to an enlargement.
Thus, it’s something we’ve learned to navigate during girth enhancement procedures, but it sometimes requires patience and dedication on the part of the patient with following prescribed aftercare techniques or follow up visits at our clinic.
Circ Scar Line: Three potential sources for delayed healing
1. Blocked lymphatic drainage
The most common impediment to healing from an infancy circ is when the residual circumcision scar line is substantial enough to create a barrier that inhibits post-surgical swelling fluids from readily exiting the area behind the circ scar line. Basically, the scar line blocks the lymphatic drainage necessary for healthy healing.
This condition will usually manifest with what looks like a “pinched” narrow line around the penile shaft between the circ line and the glans. Residual trapped fluid from swelling that can’t effectively get reabsorbed into the body, will often resemble a thick neck area around the glans.
Complications with non-surgical enhancements from a heavier circ scar line are usually easier to resolve than surgical thickening procedures due to the simple fact there’s less swelling involved in non-surgical procedures. It’s also why we remain emphatic about starting with 10ML of the chosen dermal filler, so we can first condition the inner prepuce during the first treatment. This is particularly true with Ellansé since the polycaprolactone (which triggers an inflammatory response that creates long lasting level III collagen) can trigger significant swelling when used in larger amounts.
2. Circ Scar Line: Fat necrosis trapped behind scar line
A Fat Tissue Transplant is performed exactly as it sounds. Healthy, living adipose fat cells are harvested from a select location and transplanted to the outer layers of the penis to make it naturally thicker.
We harvest “extra” fat cells in anticipation of the fact some of the transplanted fat cells won’t survive the relocation process (We typically lose between 30%-35%).
Dead fat cells located beneath the circ scar line are usually easily reabsorbed into the body. However, fat cells that expire in the area above the circ scar line sometimes get trapped and can’t easily reabsorb and turn into palpable nodules known as fat necrosis (dead fat cells).
3. Lack of blood flow within the inner prepuce
The residual scar from an infant circumcision doesn’t just hinder swelling fluids from existing the penis in a healthy manner, it also sometimes (when the incision was cut more deeply and penetrated the Tunica Dartos or Bucks Fascia) doesn’t allow any blood to flow within the inner prepuce, meaning that transplanted tissue with an FTT can’t absorb any nutrients required to stay alive.
As discussed previously, we transplant living adipose fat cells to the outer layers of your penis with an FTT. If those transplanted cells can’t access essential nutrients for survival because the capillaries were cut during an infant circumcision, those transplanted cells will likely die.
Unfortunately, since the scar is not outwardly visible, we’re unable to differentiate which men will face significant complications from a circumcision scar in advance of an enlargement procedure.
Resolving healing issues from infancy circumcision scar lines
Rejuvall provides both at-home and in office solution pathways for disrupted healing triggered by a deeper than usual infancy circumcision scar line.
Please follow the instructions of your provider to help with healing and make time for in-office follow up appointments if requested.
What Size Penis Requires Enlargement?
Rejuvall© is the nation’s longest running men’s sexual health clinic. We’ve forgotten more about enhancing male performance than most new “cutting edge” men’s health services will ever know.
We observed that wanting a penis enlargement isn’t necessarily about existing penis size for some men. There are various causes for this need. What are the most common reasons men inquiring about penile enhancement options with Rejuvall? They are numerous; however the following are the most common:
Increased weight can cause the penis to appear smaller due to an engorged fat pad and inner pressure where the penis is permanently tethered to the pelvic bone, pulling it inward.
Genetics determines the size of the penis. Some guys are born with a smaller unit than others and spend their lives feeling insecure as a result. We can now correct this.
The Vagina of Your Partner Has Gotten Bigger
Because of aging and childbearing, the average vagina grows 20 percent to 50 percent broader, yet a man’s penis shrinks with age. This is a common reason men seek augmentation.
Penile damage (Peyronie’s Disease), prostate and cancer diagnoses, and pharmaceutical side effects are just a few of the various health-related adverse effects that might result in reduced size and a desire for enlargement.
Sexual Partners’ Commentary
A sexual partner’s ill-advised comment about a man’s penis size can have disastrous effects for men. Reduced self-esteem aused by such criticism can even lead to celibacy or ED. Many guys who have dealt with this seek an enlargement to fix the situation.
Many men compare their own units to men in pornographic movies. This, in our opinion, is an unhealthy motive for seeking augmentation. The men in these movies are always much bigger than average, and the females gushing about how much pleasure it brings them are actors.
An augmentation makes sense if your penis size has been a source of negative self-image or if your partner’s changed size is inhibiting pleasure. However, attempting to create a “porn star dick” is never a healthy reason for enlargement.
How to Correctly Measure Your Penile Length
How to Measure Your Penis Thickness Correctly
You can hurl statistics around all you want, but they’ll be meaningless if you’re measuring your member wrong.
We recommend a soft measuring tape for the most precise (and comfortable) assessment. Induce an erection. Wrap the tape all the way around your penis at its widest point to measure girth.
You can also measure your thickness when flaccid but because of the wide number of factors (explained later) that affect your locker room lengthÔ, we find this sort of evaluation of little value.
How do you Measure Your Penile Length?
When people ask, “How big are you?” they are usually referring to “How long is your penis?” This is the biggest reason most men seeking augmentation are often focused upon length.
You’ll want to use a solid ruler (wood or plastic) to determine length. Again, start by first inducing a full erection.
To measure length, you’ll need a sturdy ruler (wood or plastic). Start by inducing a full erection once.
To measure to the tip of your penis, lightly press one end of the ruler on the base of the pelvic bone. There’s some debate about how hard you should press into any fatty tissue at the base.
Because all of the clinical studies included significant pressure into the fat pad, we recommend that you do the same when determining your length for a fair comparison. However, keep in mind that this does not represent the amount of length you have available for partner penetration during intimacy.
You’ll want to mildly press one end of the ruler against the base of the pelvic bone and measure to the tip of your penis. There’s disagreement regarding how intently you should press into any fatty tissue at the base.
Since all the clinical studies pressed intently into the fat pad, we would suggest you do the same when identifying your length for fair comparison. However, know that’s not how much you have available for partner penetration during intimacy.
Why And How Does Flaccid Penis Size Change?
Your flaccid penile size is never constant
One reason we’re not a big fan of measuring penile flaccid size as an aspect for comparison of size is that this metric changes often and can be affected by a wide range of outside influences.
Here we explain the factors which impact the size of your flaccid penis.
The Ambient Temperature
In cold weather, a non-erect penis is often smaller than usual, as blood vessels constrict to help keep your body warm. Consider the cooler rooms in your home where you might keep the door closed and the HVAC vents shut to save money on utilities.
The size of the non-erect penis can be increased in hot weather because blood vessels enlarge, and blood flow is boosted throughout the body.
Arousal and its Impact on Flaccid Penis Size
Studies show men usually have some form of sexual thought every ten seconds. The most exciting thoughts often trigger an influx of blood.
Any degree of arousal triggers a longer thicker penis in the flaccid state.
Need another incentive to quit smoking? Smokers are up to twice as likely as non-smokers to experience some form of erectile dysfunction.
Smoking has been demonstrated to hinder vascular blood flow and perhaps also reduce sexual arousal. It’s also indicated to impact the release of brain neurotransmitters and the inhibition of nitric oxide release to the penile tissue.
Every human body has roughly 70,000 kilometers of veins and arteries. To put that in perspective, if you joined them all together, it would take you one and a half times around the earth! Most males are only using around 20% of their network by the time they reach the age of 70.
After the age of 40, every new birthday cake tends to make your penis appear smaller due to a combination of reduced testosterone levels and age-related vascular health loss.
Arteriosclerosis is a disorder in which fatty deposits obstruct your arteries. Most men are aware of how clogged arteries can cause a heart attack, but few realize that the same situation can cause blood flow problems in the erect and flaccid penis.
Stress & Fear
When a guy is afraid, he has a natural “release valve” that allows the engorged blood of an erection to escape. While its original purpose was to allow early males to rapidly and easily defend themselves if assaulted during sex, it now mostly affects modern men who fear their erection might fail, creating ED unintentionally.
Severe stress has a similar effect. Any blood that enters the penis is promptly expelled.
Your Body Weight
Because your penis is attached to the pelvic bone deep within your body, it often draws inward if your lower abdomen expands significantly due to fatty tissue. Increased weight also collects in the supra pubic fat pad, which is located directly above where the penis emerges from beneath the pelvic bone. The penis seems smaller when that area grows larger.
Finally, when the vascular system is overworked, blood flow into the penis is reduced, resulting in a smaller flaccid penis.
A Bent Penis During Erection
When the penis is injured fibrosis is triggered and it increases over time. Following an acute penile injury, this process occurs swiftly. However, the majority of cases arise “out of nowhere” as a result of a lifetime of constant microtrauma and when the patient’s vascular health deteriorates with age.
Fibrosis in the soft tissue of the penis not only causes curvature during erection, but it also prevents blood flow in the flaccid state.
Erectile Dysfunction Symptoms
You may have heard that erectile dysfunction affects 20 to 30 percent of males. That figure is misleading because it’s an estimate of how many men now experience ED symptoms.
If they live long enough, every man will develop ED. Symptoms usually begin in the 40s and become much more common in the 50s and early 60s.
In and of itself, ED is not a diagnosis. Rather, it’s a symptom of one of the five primary causes of ED. Unfortunately, by the time they seek treatment, 72 percent of men have more than one of the five problems.
Because ED reduces blood flow to the penis, it affects flaccid penis size.
Certain pharmaceutical drugs can make your penis appear smaller than it is.
Due to vasoconstriction in the penile blood vessels, dextroamphetamine, which is often used to treat attention deficit disorder, as well as certain antidepressants, might impair genital sensitivity and produce diminished sexual function.
Other medicines have the side effect of producing ED, which results in a smaller flaccid penis.