What are my chances of growing taller until 21? i am an 18 year old male who is 6'2 and my dad is 6'4 and my mother is 5'8 can i grow a few more inch?

Maybe, but: Your parents have the most influence on your final height.A simple height projection is calculated from theirs.Males are expected to reach the average of their parents height + 2.5 in.Which would be 6'1.5".The actual growth is determined by growth centers in your long bones.An x-ray of your wrist/hand can be assessed for bone maturity.If yours were like 14 you will grow taller, if 18, you are done.