he is 6'1 to 6'1.5 even though he is listed as 6'3
.you will lose about an inch of height from morning to end of day due to gravity
.you might measure with shoes on (like lots of sport athletes)
.Generally they will round up....so if I am 5'4.5 I would just say 5'5.
. After the age of 30 you can start to lose height.