im 12 years old too, and my penis is 3 inches when erect
it depends on your age and your stage in puberty.
You are at a different stage of puberty than he is.
every one is different, your penis is "normal" for your age/stage of puberty, from here you could grow to almost any size, it's a matter of your Genes and Hormones, there's no way to know how big it'll get, but normal is 5-6ish, you're not far off.
The size of the penis in Tanner stage 3 is about 6 cm (about 2.5 inches) when flaccid. This is usually when the boy is between the ages of 11 and 12.5 years.
Your age and the stage of puberty you are in will have a big effect on the length of your penis. The average length of an adult erect penis is 6 to 7 inches long. There isn't an average length for flaccid (limp or soft) penises because their length can alter with the temperature and with your emotional state.
Guys grow in height starting at birth. But if you are talking about penis size, they start growing in the second stage of puberty, which is around 11-11.5 years old on average.
162cm is the average height for a 14 year old boy. You could be older or younger and the stage of puberty you are at willl also have a large bearing on your penis size. But a 14 year old boy might have an average penis length of 3 or 4 inches erect, obviously some boys will have a smaller erect penis than this and other might have a longer one.
There is no particular stage of puberty that you shouldbe at. Puberty is a very variable process and different boys can start it at different ages. They can also go through the various stages of puberty in different orders. For example some boys will get hair growing in the armpits before they grow any pubic hair near their penis while other boys will grow pubic hair before they grow hair in their armpits. The average age at which puberty usually starts in boys is 12 to 13 years of age but the normal range for puberty to begin is anywhere between 9 years of age and the late teens. Which ever stage of puberty you are in at 12 years of age is the right stage for you.
In the first stage of puberty, the average volume of the testicles is about 1.5 ml each.
Sorry to say my friend, but you probably won't get much more than that. But don't worry that's average or slightly above....
the answer to this question is puberty
I guess maybe about two or three. There is really no definite answer for that. If you have an older brother or family, have a talk with them and ask what is normal. Many people mature differently.The penis can grow several inches during puberty but it can depend on how long it was to start with also. A boy who had a smaller one will find the most growth during puberty.It can vary, but the average adult male has a penis size of between 5.5 and 6 inches.During the course of puberty, the penis will reach its adult length and girth. This usually starts at about age 11-12, although this may be later in some "late blooming" males. Puberty stops usually between the ages of 20-23 so your penis could grow from when you start slowly until you stop puberty or it can grow to its maximum during halfway thu your puberty. Your size and girth is genetic don't be shy go ask you dad brother dads side of the family their sizes youl be in that range.It really depends on the individual, especially since all teenage boys are different in one way or another, but usually during puberty a teenage boy's penis usually grows a lot in size, the average size of a grown man's penis is about 5-6 inches.Before puberty the average length of a boy's erect penis would probably be around an inch while the average length of an erect adult penis after puberty is 6 to 7 inches. So a growth in length of 5 or 6 inches and also an increase in girth (thickness) during puberty is likely.