I'm 16 an my penis hasn't grown its 1 inch soft an 2 inches hard. I hope it grows before I'm 16. Thing is I have a deep voice chest hair an mustache an somewhat of a beard. Why hasn't it grown?
Nobody can say why it hasn't grown - yet.
But, your penis can grow into your early 20s. Some guys get bigger early and others later.
Are you "heavy?" Body fat can make your penis appear smaller.