What age do boys stop growing?

[catwalker]

Anybody know? I've got a 6'4" 14 year old. He looks fantastic, but I'm really hoping he's not going to get any taller. Do you think that might be it or will he still have more to go?

Wow! how lovelt catwalker.
I always thought it was 21 for boys and 18 for girls.

My little brother is 6'8", but I can't remember at what age he stopped growing.
My Ds is 5'5" and isn't 11 for another 4 weeks, so I'm expecting a very tall Ds too! which is lovely, but his back is very rounded because he won't stand up straight or sit straight either

I think it is 21 too.

But wow catwalker, what a tall boy you have! He probably won't grow much more than that now... Nothing wrong with tall men though!