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health advisory Hospital Mens Health 2007-11-15 5:38:14

Answer:

Here are the results of a couple of studies. I trust the second study more than the first. To help you better understand what all these numbers really mean, please read all my post.

By age, the averages found were:

FIRST STUDY (averages of measurements given by teens to a survey done by researchers)

Age....... Size

12....... 4.1" (104 mm)

13....... 5.1" (130 mm)

14....... 6.0" (152 mm)

15....... 6.1" (155 mm)

16....... 6.3" (160 mm)

17....... 6.5" (165 mm)

18....... 6.4" (163 mm)

19....... 6.2" (157 mm)

20....... 6.2" (157 mm)

Conclusions:

The average adult penis size is about 6.1 inches or (157mm). It is interesting that in this study, penis size 'peaks' at age 17. Since penises do not get smaller as a male approaches age 21, it can be concluded that boys aged 16, 17, and 18 are most likely to exaggerate the size of their penises.

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SECOND STUDY (averages of measurements taken by doctors)

Age....... **Erect Length (inches & centimeters)

11....... 3.0" (3 and 0/16ths") 7.5 cm

12....... 3.8" (3 and 13/16ths") 9.6 cm

13....... 4.8" (4 and 13/16ths") 12.3 cm

14....... 5.4" (5 and 6/16ths") 13.6 cm

15....... 5.6" (5 and 10/16ths") 14.3 cm

16....... 5.7" (5 and 11/16ths") 14.5 cm