Men everywhere worry that their penis is smaller than it should be, then what is the average penis size?
We will present you with facts from all the scientific studies done on penis size so that once you have finished reading this article, you will feel satisfied that you have the most accurate answer to the question.
When is penis size too small?
Perhaps the best gauge of what is considered to be a small penis is given by the threshold used by doctors for when penile augmentation may be considered.
Researchers publishing in the Journal of Urology studied the penis sizes of 80 “physically normal” men, measuring penile dimensions before and after drug-induced erections.
After finding average sizes, they concluded:
“Only men with a flaccid length of less than 4 centimeters [1.6 inches], or a stretched or erect length of less than 7.5 centimeters [3 inches] should be considered candidates for penile lengthening.”
What is ‘normal’ or average penis size?
In the Journal of Urology study, researchers found the following among the group of 80 men:
- An average penis size of 8.8 cm (3.5 inches) when flaccid
- An average penis size of 12.9 cm (5.1 inches) when erect The study also found that the size of a man’s erect penis was not correlated with the size of his flaccid penis.
This means that men whose penises are different lengths when flaccid may have similarly sized erect penises.
The finding on how much the penis length can ‘grow’ — on whether you are a ‘shower’ or a ‘grower’ — was further supported by a study of 200 Turkish men, in which “flaccid length had little importance in determining erect penile length.”
The research to determine average penis size includes a study published in January 2014 that examined over 1,600 American men, although it did not take independent physical measurements.
Instead, the study relied on the men’s own measurements of penis size.
The reports may be considered fairly reliable, however, since the men were to be given condoms to match their self-reported measurements, meaning that any inaccuracy would have resulted in ill-fitting prophylactics.
This study found the average penis size to be as follows:
- Average size for an erect penis is 14.2 cm (5.6 inches)
- Average circumference of an erect penis is 12.2 cm (4.8 inches).
The researchers said the self-reported erect penile dimensions were consistent with findings from other studies.
Their study added the finding that the precise dimensions of an erection can be influenced by the mode of getting aroused, such as whether a man uses hand stimulation.
How to measure your penis size
Measure length from the top of your penis to the tip of your glans.
The top of your penis is where it connects to your pubic bone.
The tip of your glans is the round part at the end of your penis.
Compress any fat in front of your pubic bone when measuring. Also, don’t include additional length related to a foreskin.
Measure girth around the base or the middle of the shaft.
Size at birth
The average stretched penile length at birth is about 4 cm (1.6 in), and 90% of newborn boys will be between 2.4 and 5.5 cm (0.94 and 2.17 in).
Limited growth of the penis occurs between birth and 5 years of age, but very little occurs between 5 years and the onset of puberty.
The average size at the beginning of puberty is 6 cm (2.4 in) with adult size reached about 5 years later. W.A. Schonfeld published a penis growth curve in 1943.
Size with ageing
Authors of a paper reviewing research on area of penis sizes conclude that “flaccid penile length is just under 4 cm (1.6 in) at birth and changes very little until puberty, when there is marked growth.”
Age is not believed to negatively correlate with penis size.
“Individual research studies have… suggested that penis size is smaller in studies focusing on older men, but Wylie and Eardley found no overall differences when they collated the results of various studies [over a 60 year period].”
Size and height
A 2015 review of the literature found two studies finding height and stretched or flaccid length to be moderately correlated, seven studies finding weak correlation for flaccid, stretched, or erect length, and two studies that found no correlation between flaccid length and height.
Size and hands
One study investigated the relationship with digit ratio and found that men with longer ring fingers than index fingers had slightly longer penises.
However, the common misconception that hand size predicts penis size has been widely discredited.
Size and race
The belief that penis size varies according to race is not supported by scientific evidence.
A 2005 study reported that “there is no scientific background to support the alleged ‘oversized’ penis in black people”.
In fact, a study of 253 men from Tanzania found that the average stretched flaccid penis length of Tanzanian males is 11 cm (4.53 inches) long, smaller than the worldwide average, stretched flaccid penis length of 13.24 cm (5.21 inches), and average erect penis length of 13.12 cm (5.17 inches).
A study of 115 men from Nigeria found that the average flaccid stretched penis length of Nigerian males is 13.37 cm (5.26 inches) long, which is near identical to the worldwide average, stretched flaccid penis length of 13.24 cm (5.21 inches) and average erect penis length of 13.12 cm (5.17 inches).
A 2015 systematic review found that it was not possible to draw any conclusions about size and race from the available literature and that further research needed to be conducted.
What women think
Professor Wylie’s report also found differences between what women and men think.
A much higher percentage of women (85%) were satisﬁed with their partner’s penis size than the percentage of men (55%) who were satisﬁed with their own penis size.
According to Professor Wylie, the issue of attractiveness to women is complex.
However, most studies suggest that penis size is much lower down the list of priorities for women than such issues as a man’s personality and grooming.
Professor Wylie says: “It may come as a surprise to some young men, but most women have very little interest in the size of their penis and that’s been shown in numerous studies over time.”
He says research shows that when it comes to sex, women are much more interested in whether you are romantic, tender and sensitive to their needs and desires than your penis size.
Does size matter?
Of particular concern for some men is whether their penis will be satisfying sexually for themselves and their partner.
Some men may also be anxious about how they look naked.
When it comes to sexual intercourse, bigger may not always be better.
In a study in the journal PLOS OneTrusted Source, researchers interviewed 75 sexually active women about the size of penis they would prefer for a one-night stand and for a long-term relationship.
The women were shown 33 different-sized 3-D penis models made out of blue plastic so as not to suggest a particular race.
The average size preferred by the women in the study was an erect penis that is 6.4 inches long and 5 inches in circumference for a one-time encounter.
For a long-term relationship, the average size preferred by the women was a penis that is 6.3 inches long with a circumference of 4.8 inches.
Both of these choices were only slightly bigger than the average.
Another similar study of women’s preferences, published in BMC Women’s HealthTrusted Source, found that penis girth was more important to them than length for sexual satisfaction.
A man’s perception of his own penis size can have an impact on confidence and a positive body image.
Men who are self-conscious about the size of their penis, either in its flaccid or erect state, may experience anxiety-induced erectile dysfunction and other emotional problems.
Therapists working with men who have this kind of self-consciousness often find that a person’s perception of “too small” doesn’t align with what research shows.
One studyTrusted Source found that of 67 men who were concerned that their penis was too small, none were determined to have a penis considered short enough to recommend penile lengthening.
Can I increase the size of my penis?
The decision to try to increase the size of your penis should be made carefully with the consultation of a urologist.
The Journal of Urology study recommended that only men with a flaccid penis length of less than 1.6 inches or an erect penis of less than 3 inches should be considered as candidates for penile-lengthening treatment.
Before pursuing your options, you should get a psychological evaluation and talk with a therapist about your concerns.
You and your therapist should address questions such as, “Do you have an unusually small penis, or is it at or near average size?” and “Do you have an unrealistic perception of your penis or unrealistic ideas about what an average-sized penis is?”
You should try psychological counseling before any treatment.
If you’re considering treatment, you have some options.
One type of surgical procedure is done on the ligament that attaches your penis to the pubic bone inside your body.
The operation allows for more of your penis to extend outside your body.
Surgery involving a skin graft around the penis shaft to increase girth is also possible.
Some men benefit from liposuction around their pubic bone to help make the part of their penis covered by a fat pad more prominent.
Inflatable penile prosthetics, which are surgically inserted into the penis, are also effective in treating erectile dysfunction and for penis lengthening.
If you’re interested in a procedure to make your penis wider or longer, consult with a doctor who has plenty of experience doing these procedures.
You should also be wary of online ads for pills, creams, and other treatments that promise amazing results.