The original painting size of the Mona Lisa is 77 x 53 cm (30 x 20 7/8 in) . It is painted on poplar wood. The paintings width has shrunk from its original 55.5 cm to 53.2 cm because of aging. Despite being one of the most famous paintings in the world, the Mona Lisa is actually quite small, measuring only 2′ 6″ x 1′ 9″ .