What is the correct way to measure an adult mans erect penis — both length and girth?
The standard way to measure your penis is to place a ruler or other measuring device under the erect penis such that the bottom of the ruler is flush against your skin and the penis lays length-wise on the ruler. In terms of measuring the circumference (girth) of one’s penis, a common method of measurement is to wrap a tape measure around the middle of the erect penis. However, a penis does not always have the same circumference at different parts of the penis. Sometimes a penis is widest at the base, other times it is widest in the middle or closer to the glans (head) of the penis. Consequently, it can be difficult to make comparisons between difference measurements of circumference.
