You may not want to talk about it in public.
But a lot of guys have questions about their penis. Your penis grows longer and wider during puberty. That's the time major changes occur age the body that make you look more like a man and less like a child.
Teen Average Penis Calculator
Most guys start puberty between ages 10 and But, puberty happens at different times for everyone. You may have a penis that's grown to penis full size as early as age 13 or as late as age Your penis stops growing when you finish puberty.
Exactly when size happens, though, varies from person to person. Everyone develops at a different pace.