This study found the average penis size to be as follows: Average size for an erect penis is 14.2 cm (5.6 inches) Average circumference of an erect penis is 12.2 cm (4.8 inches).
"Studies that assess the average length of an erect penis tend to vary in their conclusions, but a review of 50 studies that included 11,531 penises reveals a combined average of 5.5 to 6.3 inches.
As of 2015, a systematic review of 15,521 men, and the best research to date on the topic, as the subjects were measured by health professionals, rather than self-measured, has concluded that the average length of an erect human penis is 13.12 cm (5.17 inches) long, while the average circumference of an erect human penis is 11.66 cm (4.59 inches).
The smallest erect penis in the study was about 1.6 inches (4 cm) long, and the largest was 10.2 inches (26 cm) long. The average penile girth was about 4.8 inches (12.2 cm).
The largest and longest erect human penis is 13.5” (34.29 cm) long, and it is Jonah Falcon who holds that record. In its flaccid state, it is 8” (20.32 cm.) long. In its flaccid state, it is 8” (20.32 cm.) long.
According to the team’s analysis, the average flaccid, pendulous penis is 9.16 cm (3.61 inches) in length; the average erect penis is 13.12 cm (5.16 inches) long.
For a long-term relationship, the average size preferred by the women was a penis that is 6.3 inches long with a circumference of 4.8 inches.
When erect, average penis size swells to 5.2 inches in length and 4.6 inches in circumference.Penis size is one of the most common sources of insecurity for men.
The 2015 study of 15,521 men, found that the average length of a stretched flaccid penis was 13.24 cm (5.21 inches) long, which is near identical to the average length of an erect human penis which is 13.12 cm (5.17 inches) long.