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Q: Penis size ( Answered,   6 Comments )
Subject: Penis size
Category: Health > Men\'s Health
Asked by: dante_mw-ga
List Price: $5.00
Posted: 19 Apr 2002 22:17 PDT
Expires: 26 Apr 2002 22:17 PDT
Question ID: 2232
How do I know if my penis is big?
Subject: Re: Penis size
Answered By: drdavid-ga on 20 Apr 2002 08:45 PDT
You probably have a good sense of where you fit in the distribution of size for 
more commonly visible measurements of body size: height, size of hands, feet, 
weight and so on. However, unless you spend a lot of time in a nudist 
environment, there are, understandably other measurements for which you don’t 
have a good sense of where you fit. Penis size is an obvious example. It’s also 
one that can make a lot of people uncomfortable. They worry about whether they 
are abnormal, “too small,” “too large,” and so on. As with most characteristics 
of human anatomy, there is a lot of individual variation. You can differ 
substantially from average without being unusual or freakish and without any 
need for concern or medical intervention. If you have concerns, by all means 
consult a doctor, but chances are good that you have nothing to worry about.

On the other hand, there is always a fascination with people who are 
significantly different for the normal range. This applies to height and 
weight, size of hands and feet, and, yes, also to penis size. So what 
is “normal”? Surprisingly, perhaps, given how common concerns about penis size 
seem to be, there are very little good data based on large samples. There are 
data, though, and the numbers seem to agree well enough to suggest that the 
sample size must be large enough to give reasonably accurate measures of 
averages and distributions. A good summary of recent data can be found at

There are additional links there to other studies as well.

The average length of an erect penis (measured along the top) is 16.1 cm (6.34 
90% of measurements fall between 10 and 21 cm (4 and 8.25 in).
The average girth of an erect penis is 12.3 cm (4.84 in).
The average length of the flaccid penis is about 9 cm (3.5 in) with most 
measurements falling between 5 cm (2 in) and 12.5 cm  (5 in).

These numbers appear to be approximately independent of such parameters as age 
(post-puberty) and nationality despite any anecdotal information you may have 
heard to the contrary, though reliable data on such variations is quite limited.

You can decide what “big” is, but just as you probably wouldn’t particularly 
label someone as “tall” unless they were in the top few percent, you probably 
wouldn’t want to label someone’s penis as “big” unless it was larger than the 
normal ranges quoted above (greater than 21 cm erect length, 12.5 cm flaccid 
length). There also appears to be a large variability in the ratio of the erect 
length to flaccid length. Average is about 1.8, but ratios from about 1 to 4 
are not uncommon.

You can turn up a lot of additional reading material on this subject with a 
Google search on:

Average penis size

And if you are concerned about appearance, you might also want to look at the 
Penis size page,

This site has many pictures of both average and more unusual penises that you 
can compare to your own.

I hope this information helps you to better understand what is “normal” 
and “big.” Again, if you have concerns, consult your doctor. You may also see 
many advertisements for companies that claim to help you increase penis size. I 
would caution you against considering their services because of questionable 
efficacy in many cases, and because it is unlikely that there is any real 
reason why you should need to change your size.

Clarification of Answer by drdavid-ga on 20 Apr 2002 13:03 PDT
Just a word of caution: the links provided in the answer above include 
additional links to material which some may find objectionable.
Subject: Re: Penis size
From: koz-ga on 19 Apr 2002 22:51 PDT
Tell us your size and we'll compare it to the average.

What is the average?  

"Recently (well, in 1988) Paul L. Jamison and Paul H. Gebhard subjected the Kinsey data to an intense statistical analysis, ironing out certain 
anomalies, correcting subject bias and measurement error with various mathematical operations we need not go into here. Their results (shown below) 
were published in the Journal for Sex Research (vol. 24, pp. 177-183)."

The data (in short, excuse the pun) came out as follows:
Flaccid Penis Length:  3.89 inches (mean), (standard deviation 0.73)
Erect Penis Length: 6.21 inches (mean), (standard deviation 0.77)

So if you consider "big" to be anything larger than the statistical average, there's your benchmark.  These measurements were taken from where the 
penis meets the body to the tip, so no cheating!)

google search: average penis size
google search: kinsey average penis size
data source:
Subject: Re: Penis size
From: guan-ga on 20 Apr 2002 03:53 PDT
Actually, a penis size that is higher than the average is not necessarily big. 
At least not abnormally big.

If you penis size is more than 2 standard deviations larger than average (or 
7.75 inches erect, according to koz-ga's figures), then it is abnormally big. 
Personally, I think that anything more than one s.d. higher than average would 
be "big".

In the standard normal distribution, 95% of the sample is within plus or minus 
2 s.d. of the average.
Subject: Re: Penis size
From: quattro-ga on 20 Apr 2002 14:59 PDT
Interesting approach guan...been a while since my last statistics class...what 
size would be 3 standard deviations larger than the average? :)
Subject: Re: Penis size
From: koz-ga on 22 Apr 2002 22:15 PDT
That would be 6.21+(3*0.77), or 8.52 inches.
Subject: Re: Penis size
From: micke-ga on 23 Apr 2002 07:10 PDT
Your penis is too big, if your woman says it hurts her.
But not all woman can take the same size of penis.
So, the conclusion is:
-If your partner says it is too big, then it is. For her/him.
Subject: Re: Penis size
From: maxhodges-ga on 24 Apr 2002 23:09 PDT
a different intrepretation of the question:

it's big when the hole is pointing up, toward the ceiling when you are
standing. If it hanging down, toward the ground, it isn't big.

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