Some studies report the average penis length to be above 6 inches, but others report it to be around 5 inches This is typically below the assumed average size. Penis size is influenced mostly by genetics, but studies suggest it may also be influenced by lifestyle and environmental factors.
The average penis size is not nearly as big as many people think it is A 2021 review concluded that the average reported erect penis size is between 5.1 and 5.5 inches A 2020 review of research on penis size found that the average length of an erect penis is between 5.1 inches and 5.5 inches.
All men are concerned about their penis size But how to measure & know the size of your penis? The other aspect to average penis size is the width or girth of the penis Here is the average penis girth for men, by percentage
As you can see from the graph above, the average penis girth is between 4 to 5 inches for about 70% of men Approximately 60% of men have a penis girth of 4.5 to 6 inches. See how you compare to the average penis size in the usa Get the latest 2025 stats, global rankings, and proven ways to grow bigger—naturally.
