Work out seat pitch comparison instantly with clear inputs, formula shown and shareable results.
Knee room is seat pitch minus the seat back thickness minus your upper leg length, which is roughly 24.5% of height. At 76 cm pitch a 185 cm passenger has about 19 cm of upper leg clearance margin — tight but workable until the seat ahead reclines.
Knee room
knee room = pitch - seat thickness - (height x 0.245)
71-79 cm (28-31 in) in short-haul economy, 79-84 cm long-haul, and 96-102 cm in premium economy.
Width affects shoulder comfort but pitch determines whether your knees touch. Below about 74 cm, tall passengers have no usable knee space.