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World penis size


Dr. Nakajima research -- Japan

Japanese medical data
Measure 45 soldiers in 1933

Penile length is measured from the pubic bone to the tip of glans.
Bone pressed method

Erect penile length 127mm
Erect penile circumference 115mm
Flaccid penile length 82mm
Flaccid penile circumference 85mm

Erect penile length
-99mm2.2%
100-109mm6.7%
110-119mm20.0%
120-129mm40.0%
130-139mm6.7%
140-149mm17.7%
150mm-6.7%


Tokyo Shinjuku hospital research -- Japan

Erect penile length 125mm

-99mm2.7%
100-109mm12.0%
110-119mm24.3%
120-129mm26.0%
130-139mm19.7%
140-149mm8.0%
150-159mm4.0%
160mm-3.3%


Okamoto Co.,Ltd survey -- Japan

Questionnaire in Tokyo

Erect penile length 151mm
Diameter of the glans 41mm
Diameter of the midle shaft 38mm
Diameter of the base 39mm

Erect penile length
-120mm4%
120-129mm12%
130-139mm19%
140-149mm17%
150-159mm17%
160-169mm6%
170-179mm7%
180-189mm8%
190-199mm4%
200mm-6%


FujiLatex Co.,Ltd survey -- Japan

Questionnaire of 664 men in 1981

Erect penile length 139mm
Erect penile circumference 119mm


Sex establishment survey -- Japan

Measure 500 men by sex worker in 1999

Erect penile length 126mm


The web "Japanese penis size" survey -- Japan

Web questionnaire in 2000
Bone pressed method

Erect penile length 146mm
Erect penile diameter 42mm
Flaccid penile length 88mm
Flaccid penile diameter 32mm

Erect penile length
-91mm0.3%
92-99mm0.3%
100-107mm0.0%
108-115mm2.9%
116-123mm6.6%
124-131mm10.5%
132-139mm15.1%
140-147mm19.7%
148-155mm17.0%
156-163mm13.3%
164-171mm7.2%
172-179mm4.2%
180-187mm1.4%
188-195mm0.8%
196-203mm0.3%
204-211mm0.0%
212mm-0.5%



Nocturnal penile tumescence research -- Japan

Research by urology doctor in 1994
Measure 46 patients

Erect penile circumference 112mm
Flaccid penile circumference 80mm


Older patients urological research -- Japan

Research by urology doctor in 1964
Measure 46 patients. Mean age 70 years
Bone pressed method

Erect penile length Ave 11.8cm Min 9cm Max 15cm


Medical research "Penile size in Japanese men" -- Japan

Research by urology doctor in 2008
Measure 100 patients
Bone pressed method

Flaccid penile length 8.20cm
Flaccid penile circumference 8.31cm


Korean penis size

Research by condom manufacturers in 1998
279 men measure own penis in hospital
Bone pressed method

Erect penile length Ave 126.6mm, Min 97mm, Max 176mm
Erect penile circumference Glans 113.3mm, Neck 107.5mm, Base 112.8mm

Erect penile length
-99mm0.4%
100-109mm8.9%
110-119mm20.8%
120-129mm30.5%
130-139mm22.2%
140-149mm13.2%
150-159mm3.9%
160mm-1.1%


Korean penis size 2

Research by urology doctor in 1998
Measure 232 patients and 55 volunteers
Non bone pressed method

Erect penile length 118.8mm, Min 75mm, Max 150mm
Erect penile circumference 121.1mm, Min90mm, Max155mm
Flaccid penile length 77.8mm, Min 45mm, Max 125mm
Flaccid penile circumference 90.2mm, Min 80mm, Max 135mm

Erect penile length(Bone pressed) 140.6mm, Min 95mm, Max 175mm


Korean penis size 3

Research by urology doctor in 1997
Measure 150 volunteers
Bone pressed method

Erect penile length 138.2mm, Min 95mm, Max 176mm
Erect penile circumference 111.7mm, Min 89mm, Max 150mm
Flaccid penile length 82.6mm, Min 60mm, Max 120mm
Flaccid penile circumference 83.4mm, Min 61mm, Max 120mm


Korean penis size 4

Research by urology doctor in 1998
Measure 156 patients
Non bone pressed method

Erect penile length 10.8cm
Erect penile circumference 11.3cm
Flaccid penile length 6.1cm
Flaccid penile circumference 8.9cm

Erect penile length (Bone pressed) 11.9cm


Korean penis size 5

Research by urology doctor in 1971
Measure 702 patients
Bone pressed method
Circumference is measured at neck point

Erect penile length 12.7cm, Min 8cm, Max 17cm
Erect penile circumference 10.06cm, Min 8cm, Max 13.5cm
Flaccid penile length 8.0mm, Min 5.5cm, Max 11cm
Flaccid penile circumference 8.1cm, Min 5.5cm, Max 10cm

Erect penile length
-100mm7.0%
101-110mm8.0%
111-120mm12.2%
121-130mm28.5%
131-140mm27.6%
141-150mm9.1%
151-160mm6.0%
161mm-1.6%


Chinese penis size

Research by doctor in 1988 Shanghai
Measure 868 men

Erect penile length 11.6cm, Min 6cm, Max 16cm
Flaccid penile length 6.9cm, Min 3cm, Max 11cm

Erect penile length
-8cm 2.2%
8-14cm 87.1%
14cm- 10.7%


Chinese penis size 2

Research by doctor in Beijing
Measure 2547 men
Bone pressed method
Circumference is measured at 1cm under point from the glans.

Erect penile length Ave 13.07cm, Min 8.60cm, Max 17.43cm, Normal range 10.87-15.27cm
Erect penile circumference Ave 10.76cm, Min 7.08cm, Max 15.27cm, Normal range 9.02-12.50cm
Flaccid penile length Ave 7.43cm, Min 4.10cm, Max 12.10cm, Normal range 5.39-9.47cm
Flaccid penile circumference Ave 8.17cm, Min 5.80cm, Max 11.6cm, Normal range 6.92-9.42cm


Chinese penis size 3

Research by doctor in 1998 Tianjin
Measure 220 men at pre-marital examination
Bone pressed method
Circumference is measured at 1cm under point from the glans.

Erect penile length Ave 12.74cm, 95% range 9.57-15.92cm
Erect penile circumference Ave 10.56, 95% range 9.36-12.91cm
Flaccid penile length Ave 8.75cm, 95% range 5.78-11.63cm
Flaccid penile circumference Ave 8.97cm, 95% range 7.12-10.76cm


Taiwanese penis size

Research by doctor in 2003
Measure 298 patients
Bone pressed method

Erect penile length 13.1cm
Erect penile diameter 3.8cm


Thai penis size

Bangkok Medical University research in 1979

Erect penile length 135mm
76-100mm3%
101-125mm27%
126-150mm51%
151-175mm17%
176-200mm2%


Kinsey institute

From Kinsey report
Self-reported data on 3500 American college males in 1948

Erect penile length 158mm
Erect penile circumference 123mm

95, 102mm0.5%
108, 114mm1.9%
121, 127mm2.8%
133, 140mm15.1%
146, 152mm31.9%
159, 165mm23.1%
171, 178mm15.2%
184, 191mm4.7%
197, 203mm2.0%
210, 216mm0.6%
222, 229mm0.2%


LifeStyles Condoms penis size survey

Survey by American condom manufacturers
Nurse measure 401 males in 2001 Mexico
Many of them were US college students

Erect penile length 149mm
Erect penile circumference 126mm

-130mm11%
130-140mm12%
140-150mm39%
150-160mm15%
160-170mm10%
170-180mm8%
180mm-5%


"The penis" survey

Web questionnaire data in 2003
1500 response data

Erect penile length 152mm
Erect penile circumference 128mm

95, 102mm1.6%
108, 114mm2.2%
121, 127mm8.7%
133, 140mm15.2%
146, 152mm32.5%
159, 165mm20.8%
171, 178mm11.5%
184, 191mm4.5%
197, 203mm1.8%
210, 216mm0.6%
222, 229mm0.6%


Italian penis size

Measure 3300 men at the military examination in 2001
Age 17-19 years
Non bone pressed method

Erect penile length 125mm

Erect penile length
-9cm 10%
9.5-12.5cm 40%
13.0-15.0cm 40%
15.5cm- 10%


America UCSF Survey

University of California, San Francisco survey in 1996
Measure 80 patients
16 men are African. 10 men are Asian.
Non bone pressed method

Erect penile length Ave 12.9cm, Min 7.5cm, Max 19cm
Erect penile circumference Ave 12.3cm, Min 9.0cm, Max 16cm
Flaccid penile length Ave 8.8cm, Min 5.0cm, Max 15.5cm
Flaccid penile circumference Ave 9.7cm, Min 6.5cm, Max 13cm

Erect penile length (Bone pressed method) 15.7cm


German penis size

Research by urology doctor in 2001
Measure 111 men. Age 18-19
Bone pressed method

Erect penile length 14.48cm
Erect penile diameter 3.95cm
Erect glans diameter 3.49cm
Flaccid penile length 8.6cm


Jordanian penis size

Research by urology doctor in 2004
Measure 271 patients
Bone pressed method

Erect penile length Ave 13.5cm, Min 7.5cm, Max 20cm
Flaccid penile length Ave 9.3cm, Min 4.0cm, Max 15cm
Flaccid penile circumference 8.98cm


Colombian penis size

Research by urology doctor in 1999
Measure 130 patients. Patients race are caucasoid
Bone pressed method

Erect penile length Ave 13.9cm, Min 10cm, Max 21cm
Flaccid penile length Ave 10.49cm, Min 7.0cm, Max 13.5cm
Flaccid penile length (Non bone pressed) Ave 8.95cm


Iranian penis size

Research by urology doctor in 2006 Tehran
Measure 1500 patients
Non bone pressed method

Erect penile length Ave 11.58cm, Min 7.5cm, Max 19.0cm, 95% range 9.5-14.0cm
Flaccid penile length Ave 8.66cm, Min 4.4cm, Max 13.5cm, 95% range 7.1-10.0cm


British penis size

Research by urology doctor in 2011
Measure 610 patients
Bone pressed method

Erect penile length Ave 14.3cm
Flaccid penile length Ave 10.2cm
Flaccid penile length (Non bone pressed) 8.7cm


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