251 cm
Sultan Kösen (born 10 December 1982) is a Turkish farmer who holds the Guinness World Record for tallest living male at 251 cm (8 ft 2.82 in).
Kösen's growth resulted from the conditions gigantism and acromegaly, caused by a tumour affecting his pituitary gland. Due to his condition, he uses crutches to walk.
Source : Wikipedia
