Penis Size

How can I tell if my baby’s penis is the normal size for his age?

Penis Size

Dr. Greene’s Answer:

In determining size, the “stretched penile length” is far more important than the “relaxed length.” To evaluate penis size, stretch the penis gently and measure from the bone at the base all the way to the tip. Be sure to depress the surrounding fat pad to get all the way to the base. Here are the normal values:

Average Stretched Penile Length 
(Adapted from Feldman KW, Smith DW. Journal of Pediatrics. 1975; 86:395):

Age
Normal: Mean +/- 1 SD (inches)
Abnormal: Mean – 2.5 SD (inches)
0-5 months
1.5 +/- 0.3
0.75
6-12 months
1.7 +/- 0.3
0.9
1-2 years
1.9 +/- 0.3
1.0
2-3 years
2.0 +/- 0.4
1.1
3-4 years
2.2 +/- 0.4
1.3
4-5 years
2.2 +/- 0.4
1.4
5-8 years
2.4 +/- 0.4
1.5
8-11 years
2.5 +/- 0.4
1.5
Adult
5.2 +/- 0.6
3.7

 

NOTE: This article is not intended to provide information about penis size during puberty. Due to the outpouring of questions in our comments section from teenage boys, we’ve created a post that addresses the issue.

If you are searching on information about penis size during puberty, please go to Penis Size During Puberty for your answer.

Dr. Alan Greene

Dr. Greene is the founder of DrGreene.com (cited by the AMA as “the pioneer physician Web site”), a practicing pediatrician, father of four, & author of Raising Baby Green & Feeding Baby Green. He appears frequently in the media including such venues as the The New York Times, the TODAY Show, Good Morning America, & the Dr. Oz Show.

  1. Joey44032

    I am 14 in MAY. And my penis is [REDACTED] errected. And it errects when im at school and I see girls wearing shits that show their shelf that are huge. But is it normal to have your dick errect and stick and show through your pant kinda because of a stupid beautiful girls with big tits make me have a boner. Sorry for adding some of these details. But I think some of this could help and set you in the mood I kinda am in.

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  2. Edward

    I am 13 and I’m not comftorable around my friends because I’m the tallest one but I have one of the smallest penis’s and I looked at the size chart and I’m below normal the normal average size. What can I do?

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  3. Garry

    Hlo dr.
    There is a cover of skin on my glans and neck of penis. Is it normal or not???.glas is not fully coverd bt a little bit near to the neck..plzz help me..

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  4. TRD

    I am twelve years of age and my penis is [REDACTED BY MODERATOR]. I have only one pubic hair, which is black. I have had 13 nocturnal emissions (yes i have counted) and gym class sucks because my friends make fun of me. One is like [REDACTED BY MODERATOR] and the smallest, besides me, is [REDACTED BY MODERATOR] (estimated). This makes me very uncomfortable and I’m not sure if this is normal….PLEASE help me.

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    • Dear TRD,

      I understand your concern, but size is dependents on more than age. I encourage you to read Penis Size During Puberty. If you still feel you are out of range, the next step is to be examined by your pediatrician or a pediatric urologist. He will be able to help you.

      I hope that helps,
      @MsGreene

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  5. TC

    Hi in the locker room I am much larger than everyone. I am 13, 5ft and [REDACTED BY MODERATOR], is it normal?

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  6. TD

    Hi my son will be 4 in a couple months. I had a question, he seems rather on the large size for his age. His male parts are the size of my thumb (2 inches) is it okay for him to be that far ahead of most boys his age ?

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    • Ben

      Hi its a little over but it wont grow again until he reaches puberty, he will be fine when he has kids.

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  7. Christian

    Hi i just turned 14, when I have an erection how should my foreskin act or what should happen?

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    • SM

      My penis itchy ok

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  8. Greg

    What does +/- SD on the measuring table mean ?

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  9. NA

    HI,

    I am 13 years old and my penis is soo small compared to my friends penis.[REDACTED BY MODERATOR] I feel ashamed between my friends. I have the shortest penis and the smallest testicles between my friends. It is between [REDACTED BY MODERATOR]

    So please reply and answer me what should I do?? Please answer me.

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    • Dear NA,

      I hope you have seen the post that we published to address Penis Size During Puberty. If you haven’t, read it now as it will answer some of your questions.

      All boys and girls develop at different rates. This means some will be behind others in their development. Regardless of whether you are on track or not, your concern over your penis size is enough reason to discuss this with you pediatrician or family doctor. You can bring it up at your next appointment. Your doctor will likely do a physical exam and can tell you if you are the appropriate size for your stage of development or not and provide direction if you need further help.

      Best,
      @MsGreene
      Mom, Co-founder DrGreene.com, not a doctor

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    • John Diaz

      Son . Don’t be ashamed. As long it work and do it job right. Thanks god that you have one.that all it counts.

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  10. Giuseppe

    Good evening , sorry for my bad negli sguardi, i’m italian. My question is: how to measure a stretched penile? I must stretched it at the limit it can? And i must measure it until the tip? [REDACTED BY MODERATOR].

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  11. Taco Jr.

    I just turned 14 october 1st and i feel ashamed bcause my penis is small in my eyes compared to other kids my age what ive read so far and i feel scared if someone sees it and ill become the laughing stock for having small penis … My penis is [REDACTED BY MODERATOR] What do i do?

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    • At 14, with your strong feelings, it is wise to discuss this with your pediatrician. At your age, you are due to have a physical exam each year. Typically your pediatrician will ask your parent to wait in another room for your exam and he* will ask you if you have any concerns that you’d like to discuss in private. He will be able to help you.

      If you don’t get a regular check up, ask your mom or dad to make an appointment for you to be checked. If that’s not possible, the next time you’re sick with something like a flu bug, use that as a reason to see your doctor — then ask to talk to him about something else. That happens frequently. But, I’d suggest, if you’re going use this tactic, be sure to tell him first thing that there is something else you want to discuss so you don’t run out of time.

      Hope that helps.

      @MsGreene
      Moderator, Mom, not a doctor

      *I say “he” here, not because women don’t make great pediatricians, but because I’m assuming you’d be more comfortable talking to a man and likely have a male pediatrician.

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  12. Private

    Im 13 and started puberty, i don’t want A Link to penis size during puberty.
    My penis is about [REDACTED BY MODERATOR]. I feel very ashamed and have felt depression because i think It is too small. I don’t feel confident around girls. I hate myself. My life seems pointless.

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    • Dear Private,

      This would be a great time to talk with your pediatrician or family medicine doctor. He will be able to help you or provide a referral to someone who can. Don’t put it off. Make the appointment first thing tomorrow.

      Best,
      @MsGreene

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  13. JC

    Hi, I’m 13 years old and I have [REDACTED BY MODERATOR]. The guys in the locker have a much larger penis. Am I normal?

    Plz respond.

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  14. Connor

    My son is 2 yrs old and I am concerned about his penis. When he was born, it was barely visible. His pediatrician insists nothing is wrong. The length is borderline based on the chart above, just under 1 and a quarter inch stretched out. But the circumference or thickness is much smaller than usual. It’s the thickness of a standard #2 pencil. What other doctor could give us a second opinion since the pediatrician doesn’t see a problem? Thank you,

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    • Look for a pediatric urologist. Most large cities or cities with pediatric teaching hospitals will have pediatric urologists.

      Hope that helps,
      @MsGreene

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  15. Christian

    Is my penis normal? I’m 11 years old in puberty and my penis is [REDACTED BY MODERATOR].

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    • RESPONSE FROM MODERATOR

      Christian, the stage you are in puberty is more important that your age. Talk to your pediatrician and ask him if your size is normal for your stage of development. He will be able to tell you and won’t be at all put off by your question.

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  16. Raphael

    I am an 11 year old male with an oddly feminine voice,even for my age, the girls have deeper voices than me, and the people around me have noticed an odd stench around my sweat.

    I stand at 5 foot one inch in height and my penis is [REDACTED BY MODERATOR] and the slightest of touches/attractive feminine thoughts/scenes makes it hard. Is this small or is it average and is this overall normal or abnormal?

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    • It’s not unusual for boy’s voices to be higher in pitch at age 11, but the combination of an oddly feminine voice and “an odd stench around my sweat” would be worth bringing up at your next pediatrician’s visit.

      Dr. Greene isn’t addressing penis size during puberty in this post. We’ve tried to answer them in this post –> Penis Size During Puberty.

      Hope that helps.
      @MsGreene

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  17. Jay

    Hi Dr Greene, I love your website first of all. My son just turned 9 months old. When he was born, the doctor noticed that his penis size was pretty long while he was circumsizing him. However now both genitals look small. Can it be possible? I don’t really know what small is but it doesn’t look long and the tip is kind of covered with the top skin. My boy is very tall and slim. 9.7 kg and 75 cm. The pediatrician said it looks a little small. I have a thyroid disease. Can it be related to that, or circumsion, or nothing to worry about? I would be very happy if you could write me back please. Many thanks!!! Regards.

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  18. Mum

    Hi,

    My son is 12months old. The doctor said he does not have a micropenis but it is not proportionate to his body. He is being sent to an endocrinologist. I’m just concerned what is going to happen and what options are out there for them.

    Thank you

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  19. jack

    I am 13 and my penis is [REDACTED BY MODERATOR] is this normal i also can’t ejaculate.

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    • It would be wise to discuss this with your doctor.

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  20. Hugh Jas

    Hi I’m 11 and I have [REDACTED BY MODERATOR] is that normal? Also it is very easy for me to gain an erection so if anyone has any ways to stop that please reply.

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    • Jonathan

      Hey, I’m fourteen and I get erections all the time still — just not like 24/7 anymore. And if you’re worried about size (where it was redacted) don’t be. You’re only eleven and you aren’t even fully grown yet.

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    • Unknown

      Hey I’m 15 and my penis size is [REDACTED BY THE MODERATOR] and I was wondering if this is an average size

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      • We’re not addressing adolescent issues in this post. We’ve tried to answer them in this post –> Penis Size During Puberty.

        Hope that helps.
        @MsGreene
        Executive Producer, DrGreene.com

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    • Thomas

      DearHugh Jas,
      If you are at home you can just put a cold towel on it and at school, just ask the teacher to go to the bathroom and put some cold water on a paper towel and wrap that around your penis.

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  21. Anonymous

    I’m 12 and [REDACTED BY MODERATOR] is this normal?

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  22. AQ

    Hello. I am 10 years old. My Penis is [REDACTED BY MODERATOR]. I can get an erection randomly, or whenever I see a girl I find attractive. Is this normal?

    If so, what is the closest estimation to how big my penis will get when I am an adult? I am asking this question because we had Sex-Ed a few weeks ago.

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  23. John Greece

    I am 13 years old and my penis is [REDACTED BY MODERATOR]. I want to made it smaller. Sir, please help.

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  24. pouria

    Dear Dr.

    I am 15 and my penis size is only [REDACTED BY MODERATOR]. I AM really worried aboUt it. If it is not normal, please mention a way to increase its size. It is really important for me.

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  25. Key

    I’m 14 and penis is [REDACTED BY MODERATOR] is that normal?

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    • This article is not intended to provide information about penis size during puberty. Due to the outpouring of questions from teenage boys about this topic, we’ve created a post that addresses your question. Please go to Penis Size During Puberty for your answer.

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  26. anonymous

    Is it normal if im 12 and not hit puberty and its [REDACTED BY MODERATOR]

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    • This article is not intended to provide information about penis size during puberty. Due to the outpouring of questions from teenage boys about this topic, we’ve created a post that addresses your question. Please go to Penis Size During Puberty for your answer.

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    • Tim bigham

      I was 16 before I started puberty

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  27. nobody

    Hi my penis size [REDACTED BY MODERATOR]. I turned 12 two months ago.

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    • This article is limited in scope and is not intended to provide information about penis size during puberty. Due to the outpouring of questions from teenage boys about this topic, we’ve created a post that addresses your question. Please go to Penis Size During Puberty for your answer.

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  28. John

    I’m 14 I’ve got a [REDACTED BY MODERATOR]

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    • This article is limited in scope and is not intended to provide information about penis size during puberty. Due to the outpouring of questions from teenage boys about this topic, we’ve created a post that addresses your question. Please go to Penis Size During Puberty for your answer.

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  29. Adam

    Hello! I was turning 12 years old in this October. My penis size is [REDACTED BY MODERATOR] inches erected. I’m was circumcised. It is average or not?
    Thank you for the answer….

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    • This article is not intended to provide information about penis size during puberty. Due to the outpouring of questions from teenage boys about this topic, we’ve created a post that addresses your question. Please go to Penis Size During Puberty for your answer.

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  30. Brady

    I’m 9 I hit puberty like 2 months ago and my penis [REDACTED BY MODERATOR]. Is that normal?

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    • Going through puberty at 9 is tough. That’s a lot of change at a very young age. It would be smart to discuss this with you pediatrician at your next visit, but in the meantime, go to Penis Size During Puberty for specific information about changes that happen to penis size during puberty.

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  31. John

    I am 14 and my penis head has little red bumps on it, I have not had sex so it’s not herpes. What is it?

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    • Ben

      Same as me dude any help?

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  32. Secret

    I’m 10 and my penis is [REDACTED BY MODERATOR] and I haven’t hit puberty yet it this normal

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    • At your next physical you can bring your concerns up with your doctor, but if you are close to the numbers in the chart above, it’s probably not a reason to make a special appointment.

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  33. jack

    I am 28 and my stretched penis length is [REDACTED BY MODERATOR]. Is it ok for my age? my partner tell me it is not ok and she suffer when have sex with me!!! What can I do to correct my penis length??

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  34. Bryan

    I’m NINE YEARS OLD MY PENNIES SIZE IS [redacted by moderator].

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    • This article is not intended to provide information about penis size during puberty. Due to the outpouring of questions from teenage boys about this topic, we’ve created a post that addresses your question. Please see Penis Size During Puberty for your answer.

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  35. Hew ganus

    I’m 14 and my flaccid penis size is [REDACTED by moderator] is my penis too big for my age? Do I have a growth abnormality?

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    • This article is not intended to provide information about penis size during puberty. Due to the outpouring of questions from teenage boys about this topic, we’ve created a post that addresses your question. Please go to Penis Size During Puberty for your answer.

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  36. Etienne Rousseau

    I am twelve and my penis is [REDACTED BY MODERATOR]. I am turning 13 in 7 months.
    I am also standing at a height of 178.5 cm or 5’11” which is also abnormal since none of my parents are freakishly tall. Could I have some sort of a growth abnormality?

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  37. Wes

    Im 17 (18 in a few days) 6″3-6″4 260lbs. I’m a tall fat person, but my penis hasnt grown. I still don’t have a lot of chin hairs, just a few. I have hair on my stomach, legs, and behind my thighs. Should I be worried?

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  38. Bill

    Just wondering but my penis is 0.75 inch non erect and 1.25 inch erect i think im too small. is this normal?

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    • Bill

      Im 11 btw

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      • It would be smart to have a physical exam and tell your doctor about your fears. In general, summer is a great time to have a complete exam in preparation for the year ahead. This year, don’t put it off.

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  39. Kannu kumar

    Listen its serious. I’m 18 and my penis size is around 2 inch when erect. I feel it’s too small, but still I produce sperm. Is it ok or I should visit a doctor?

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    • I would be wise to have a physical examination from your doctor. He can advise you.

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  40. James

    Hi, I’m turning 18 in August 2015 and I don’t think that my penis is of a normal size as it is about 1.5 inch flaccid and around 4 inch when erect. Can you give me any advice? Thanks

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    • It’s time for a physical exam and discussion with your physician. Nothing to be scared about, just time to start looking into it.

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  41. Secret14

    I’ve been reading comments on other sites and comparing and it said people at 14 are most likely lieng if they say it’s over 7 inches but mines is 7 1/2 is it to big??
    Please answer

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  42. Anonymous

    Hello, Dr. Greene! This is a very unusual thing, a twelve year old questioning penis size, but I have questions. I wanted to know if it is normal for a 12 year old to have a 2.5 inch fully erect penis. But then again, I don’t think puberty has hit me… Well… There… But just in case.

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  43. josh

    How do you measure your penis when erect

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    • Jake Cullers

      *Ruler is what I use

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  44. Max

    I am proud of my body and I shall remain so. Thank you,Dr. Greene?!

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    • Max

      I’m 12 btw.

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  45. Anonymous

    I am 13 and my penis is half an inch long flaccid and 1 inch when erect. Is this normal?

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    • Those lengths are outside the normal range. Time to get a medical workup.

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    • Dr.marty grennan

      Yes

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  46. Vishal

    I think my son has a small penis…according to his age…at the age of 8 yrs…whom shall i contact…what should be the size …when normal or when streched

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    • No name

      A doctor

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  47. SECRET

    U are all a bunch of liers this is an actual site to help you.So don’t lie about this kindof stuff

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  48. Nikhil Anand

    I m 22 year old boy
    My penis is 1 inch when normal and 3.5 inch when erected
    I want increase my penis size
    Plz solved my problem
    Say me what I do for increase my penis
    Plz reply

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    • I suggest you have a physical exam and discuss this with your doctor.

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  49. (Private)

    I feel uncomfortable talking about this but I am 10 and a half. My parents tell me it is totally OK to talk about this topic because it is going to be very relevant very soon. They are 100 percent ok with me asking questions. Anyway,

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    • (Private)

      10 and a half is my age by the way. Also, I am 0.5 above average both ways. I read up on it and it said that it is okay for “My special me time” at any age- most adults actually said they would apologise, walk out of the door and when they are done say that they will knock next time and said it is ok.

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  50. Jack Dane

    Hi

    I have a urgent question . Please help me . I was born in 1993 Sep and now I’m 22 years old . My penis size is around 1.5″ Flaccid (non erect) and 5.5″ (erect) . I think my flaccid size is very very abnormal and really it looks like a very young boy’s penis whereas my brothers size and form is very different and actually they have normal size. I remember that since I was 12 years old until now my penis size and form not change in flaccid shape. What is the main reason? Is there a treatment ? Oh I should tell you since childhood I like to put a pillow or something like it between my legs so that it press my penis and testicle and this was very pleasant for me during sleep and rest. I think doing this about 10 years prevents enlargement of my penis. Is it related to my problem or not?

    Thanks a lot …

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    • Glen

      Hello, don’t worry at all. You will have done yourself no damage. Your size is average when erect, not a problem and flaccid state is fine too – you are a grower. I personally am quite small when flaccid, but grow to a good size when roused. You are absoutely fine and should not worry.

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  51. Brett

    It is disturbing that any type of professional would allow a space to perpetuate male’s fears of not having a “big enough” penis. How is this helpful to our sons? This should be deleted.

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    • Hi Brett,

      Thank you so much for your comment. You raise an interesting and complex question. I must admit, we’ve been struggling to find the right balance. Here is the background —

      When Dr. Greene wrote this answer he was addressing the parent of a baby who was concerned about a medical condition. As a pediatrician, this is a question he gets routinely and a valid one. Recently we started getting comments from a lot of adolescent boys asking about their own penis size. We moderate all comments and have guidelines, for instance we don’t post hateful comments, comments that call other people names, spam, or anything pornographic. We do allow differences of opinion and respect multiple points of view. Where do these new questions fall within our guidelines?

      Our first thought was we needed to update our chart on penis size so these boys could just look on the chart and have their answer. You may have noticed that the chart skips from 11 years-old to adult without data. Interestingly when Dr. Greene did the research to find the answers he found there was no trusted data on normal penis size in adolescent boys. That meant we couldn’t just add to the chart.

      What we have done in the short run was to carefully read each comment and try to decide the intent of the boy writing in. Was this a joke? Was it pornographic? Was it an honest concern? Did it make fun of anyone else? We aren’t perfect (that is certain), but based on these reasons, we do not publish many of the comments made on this post.

      So why would we publish them at all? By the time kids reach puberty most have been exposed to photos, typically online or in the media, that show the human body in unrealistic proportions. Typically these photos are sexual in nature, but not always. It is our hopes that in the absence of scientific data, by allowing adolescent boys to post their honest question about the body part they feel most insecure, they will see that they are not abnormal. We know the sizes they post can not be trusted due to differences in measurement techniques and the human tendency to make ourselves appear better in other’s eyes.

      We would love your feedback. After you hear our reasoning, do you still think we should delete all these comments?

      Thanks again for voicing your concern.

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  52. Jake O'Kelly

    How do I make my penis longer

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  53. Bob provost

    Why do you guys care about how long your sons penises are?

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  54. JONATHAN MIHALY

    Just kidding man, you’re fine! Bigger than I was at your age :)

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  55. Eric

    My son is 1 week old his penis is already 1 whole inch the doctor said is real big for his age what does this mean?

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  56. michelle ebejer

    I have a 6 month boy and his penis opening is still closed in his skin. There is a tiny hole and it’s not in the centre. Is this normal?

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  57. Ellen Ledesma

    Hello, when measuring my son’s penis should I go by the stretched or the erect measurement? It appears that the erect measurement is about half an inch longer than the stretched measurement.

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  58. ann

    Hi doc.

    My son is turning 4y/o this coming May. His penis size is about 3.75-4cm. Is this normal?
    Many thanks.

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  59. Glen

    Hi Dr,

    My sons is turning 3 in a couple of months. His penus is about 2 centimetres long. Is this normal?
    He has been circumcised.

    Thanks.

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  60. KLEE

    My son just turned 2 years old and his penis is 3 CM is this normal? When he was born a urologist questioned if he had micropenis the endocrinologist didn’t say, just that he was smaller than average.

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    • RWIL

      Is that 3cm stretched?

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  61. maulik

    my son is 5 year old ,his penis size is 20 cm, pls suggest it is normal or not

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    • Gary Lloyd

      I seriously doubt that your 5 year old son is 20 cm… did u pull his skin forward instead of back to measure? less than 7 cm would be about average.. 20 cm is very unlikely

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      • Thorpyworpy

        I agree

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