Erect Penis Length
According to our survey, the average erect penis of adults (18 y/o or more) has a length of (drum roll...) 6.5 inches (16.4 cm). Other studies suggest that the average erect penis length is somewhere between 5 and 6 inches (13 to 15 cm).
Flaccid Penis Length
According to our survey, the average flaccid penis of adults (18 y/o or more) has a length of... 3.5 inches (8.8 cm). One 1996 study by Wessells & McAninch found that the average flaccid penis is 3.5 in in length (8.9cm).
If you would like to get a visual idea of what these sizes mean, we recommend checking out the Erection Photos website. They have a showcase of non-sexual images of erect and flaccid penis. Remember : you are both normal and unique.
Note: this survey is not scientific. It is for entertainment purposes only.
