Barbara Poncelet, CRNP, is a certified pediatric nurse practitioner specializing in teen health." data-inline-tooltip="true">Barbara Poncelet
Tyra Tennyson Francis, MD, is a board-certified family medicine physician and also currently serves as the clinical director of an outpatient clinic." data-inline-tooltip="true">Tyra Tennyson Francis, MD
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Tyra Tennyson Francis, MD, is a board-certified household medicine physician and also currently serves together the medical director of one outpatient clinic.

You are watching: Normal penis size for 13 year old


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Adolescence is a time for expansion spurts and other transforms spurred through the onset of puberty. Because that boys confronted with these changes, it deserve to be a time of an excellent uncertainty together some will inevitably autumn behind others in their development.


Among the vital changes in the sex-related maturation, boys will undergo together the testicles gain larger and also the scrotum begins to thin and also redden. In tandem with these transforms is the expansion of the penis which can build at various rates for different boys.


As sexual awareness increases, concerns around penis size might deepen, particularly if all other signs of puberty (including height, human body hair, and also changes in voice) room robust. Discovering what come expect—and what an "average" prick size yes, really means—can assist alleviate a most the stress.


common Penis breakthrough

The an excellent news is that dick size is hardly ever a sign of a medical problem. V that being said, over there are few answers around "normal" prick size the will fulfill an emotionally irritated teen.


Between the eras of 10 and also 14, when most of the expansion spurts occur, guys will often feel the must "size up" with their peers, believing us to fall short if they are anything less than average. Also in boys as young as 11, the visible transforms seen in rather can conveniently turn from a resource of curiosity to one of anxiety.


To aid dispel this fears, parents need to understand and also share the facts about normal penis breakthrough with their sons if and also when it becomes an issue.


stages of development

Generally speaking, a boy's vul will construct in somewhat predictable stages. Follow to experts at Stanford Children's Health, the step of sex-related maturation in boys failure roughly together follows:


First Pubertal Change: Enlargement that the testiclesPenis Growth: Around one year ~ the testicles have actually startedAppearance of Pubic Hair: 13.5 yearsNocturnal Emissions ("Wet Dreams"): around 14 yearsOther Changes: face hair, a deeper voice, and acne

What is vital to note is that, uneven wet dreams and acne, over there is no details age through which the genitals will start to grow. In boys—even an ext so than girls—it deserve to be an overwhelming to know precisely when puberty will certainly start and how it will develop.


For some, that may show up as one almost solitary event. In others, that may build in fits and starts ideal through early high school. While guys in a family members often follow comparable growth patterns, there can also be variations among brothers that defy expectations.


Even if a dick appears little by the age of 14, there is tho an chance for growth. With that being said, countless parents will desire to schedule an appointment with the family doctor if your son's prick hasn't began to thrive after the figure of body and facial hair.


Average penis Length by age

The average dick length by age, outlined in Adolescent and also Young Adult wellness Care: A useful Guide by Dr. Lawrence Neinstein, need to only offer as a pointer for genital advance in boys.


It should not be provided to check if a young is occurring "on schedule" (an action that might only underscore a boy's insecurity). Rather, it have to be supplied as a recommendation if your child fears that is fall behind in relationship to all various other markers because that puberty.


Age 10 come 11: 1.6 come 3.1 inchesAge 12: 2.0 come 4.0 inchesAge 14: 2.4 to 5.5 inchesAge 15: 3.1 to 5.9 inchesAge 16: 3.9 come 5.9 inchesAge 18: 4.3 come 6.7 inches

Because there might be errors in exactly how the prick is measured, it is usually finest to have actually the measurement excellent by a pediatrician or, much better yet, an adolescent health and wellness specialist.


Diagnosis

The diagnosis of one abnormally tiny penis would certainly seem to it is in a pretty simple process, yet it is in reality not. When a physical test may establish that a boy's prick is listed below what could be meant for his age, it can not accurately predict exactly how much development may tho occur.


However, regardless of a boy's age at diagnosis, micropenis is identified as a cock 2.5 deviations smaller sized than the mean typical for the age.


Experts define that beforehand diagnosis in infancy or at an early stage childhood is vital for efficient treatment. If hormone deficiency is the underlying cause, because that example, hormone supplementation deserve to be efficient at encouraging catch-up growth.


Keep in mind the there might be determinants other than development that describe a penis' abnormally short appearance.


One such example is childhood obesity in which too much pelvic fat obscures an otherwise normal-sized penis. The same may happen if a boy has a very large frame, developing the impression the the cock is smaller than it is.


Less commonly, there are congenital conditions that limit exactly how much that the dick is externally seen. Examples include penoscrotal webbing (in i m sorry the scrotum extends increase the underside that the penis, producing an indistinct junction between the two) and phimosis (in which the foreskin is can not to retract).


Small penis size have the right to sometimes take place as a an outcome of a genetic disorder (such together Klinefelter's syndrome) which impedes the production of testosterone during fetal development.


treatment

Generally speaking, ~ the age of 8 there is tiny a doctor have the right to do come promote penis growth in boys. For boys 8 and under, testosterone replacement therapy (TRT) might be used; research argues that the is most efficient in infancy and also early childhood.


If used early on enough, TRT (delivered in three intramuscular injections end 12 weeks) may boost the child's cock size to the reference range for his age. ~ 8 year of age, TRT has tendency to be far less effective.


For older boys, surgery might be discover to act concealed prick abnormalities. The technique can vary by case, but may encompass circumcision or an ext extensive reconstructive procedures in which the skin that the dick is "degloved" and also repositioned through sutures and also skin grafts.


Penis enlargement surgery (phalloplasty) is not taken into consideration a reasonable alternative until later in life. The risk of complications may outweigh the regarded benefits, and the outcomes tend to be change at best.


A Word from Verywell

While concerns around penis size may be understandable in boys going through puberty, that is unhelpful because that those emotions to it is in echoed or reinforced by parents or family members.


Ultimately, cock size should never be thought about a measure up of one's manhood or virility. These social attitudes just serve to undermine a boy's confidence at a time as soon as he is just just beginning to discover who the is.


If her son comes to you concerned around his dick size, take the time to talk about his feelings without diminishing them. In part cases, cock size may only it is in a symptom that a bigger problem. In part cases, over there may have been teasing at college or an underlying absence of confidence because that which prick size is emblematic.


Whether the worry is physics or psychological, it regularly helps to work-related with a medical skilled trained in adolescent health. By allowing an objective third-party into the conversation, you have the right to avoid any type of suggestion the there is a "problem" that needs resolving.


Acknowledge your son's feelings and reassure him of his self-worth, yet avoid false assurances and platitudes that might only add to his anxiety.


Verywell family members uses just high-quality sources, including peer-reviewed studies, to support the facts within ours articles. Review our editorial process to learn an ext about how we fact-check and also keep our contents accurate, reliable, and also trustworthy.

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Verywell Family"s content is for informational and educational objectives only. Our website is no intended to it is in a substitute for skilled medical advice, diagnosis, or treatment.