The average penis size refers to the measurement of the organ in its non-erect state as well as in its erect state. For younger males, the size of their penis grows during puberty which may be around the ages of 9 and 14. It tends to reach maximum size by the time a male has reached the age of 20.
A comprehensive review of 20 different studies was published in the British Journal of Urology, which analysed the data of 12,521 adult men. Measurements with a ruler and tape were done on different populations and ethnic groups to determine an average size. The findings were that the average length when not erect ranged from 7-10 centimeters, while the average length of an erect ranged from 12-16 centimeters.
This above average penis size is of adult males and is more so a general guideline. Individuals should understand variation in size is very normal.
How to Measure a Penis?
To get an accurate size, the length and girth should be measured. To measure the length, the ruler should be pressed into the groin and measured from the base to the tip. And to measure girth, a tape can be wrapped around the widest part of the penis.
What Is a Micropenis?
Some males are born with a micropenis which is when it's unusually small due to hormonal or genetic factors. It is still able to fulfill the same actions as an average-sized one. However, people can get very dissatisfied with their appearance and opt for surgery to improve it.
Sometimes it may appear smaller due to additional skin around it. This is referred to as a buried penis and surgery can resolve that.