How tall was Katharine Hepburn? Katharine Hepburn’s height was 5ft 7in (170 cm). How much did Katharine Hepburn weigh? Katharine Hepburn weighed 110 lbs (50 kg). What were Katharine Hepburn’s measurements? Katharine Hepburn’s measurements were: 36-22-33 (91-56-84 cm).