I honestly don't think there is a real age for men to stop growing because I'm 24 and 6'3 1/2 and I grew a a whole inch an a half last year
21 years old
My hubby is 6 foot 6, 23 years old and still growing, he was called short-arse at secondary school, then hit 18 and when wild!!
A person can stop growing in height up till he's about 21 years of age. Some may stop growing in height by the time they touch 16 years of age.