What seat depth should an office chair have?

The correct seat depth leaves 2"–4" of space between the front seat edge and the back of the knee when sitting fully back. Most standard office chairs have a seat depth of 16"–19". Taller users need 19"–21"; shorter users need 15"–17". If the seat is too deep, short users cannot use the back support without the edge cutting into the back of their knees. Many ergonomic chairs include a seat slider (adjustable seat depth) to accommodate different users. At OfficeFurniture2go.com, all chair specs include seat depth dimensions — call 1-800-460-0858.