Is 3.5 inches erect normal for 12 year old?

The average length of an erect penis for a 12-year-old boy is typically between 3.1 to 4.1 inches. Therefore, a measurement of 3.5 inches falls within the normal range for that age group. It is important to remember that there is a wide range of normal variation in penis size, and growth and development can vary among individuals. If there are concerns about development or growth, it is recommended to consult with a healthcare provider for further evaluation and guidance.