Is a 5 inch erection too big for a 12 year old boy?

At 12 years old, boys are still in the early stages of puberty, and their bodies are undergoing significant changes. A 5-inch erection is generally considered within the normal range for boys who are experiencing puberty, but it's important to remember that every individual develops at their own pace. If there are concerns about development or health, it is best to consult a healthcare professional.