If you work eight hours a day at a desk that means a lot of time logged sitting in a chair. The overall height of an office chair varies depending on the height of the backrest and if there is a neck rest. Chair Height Mm Google Search Dining Table Sizes Table Sizes Standard computer chairs typically work for most people but are designed for to have a weight capacity usually around 250 pounds. Office chair dimensions . Depth is measured from behind the back of the knees. 16 inches to 20 5 inches seat width. Typically designed with high degree of adjustability based on individual ergonomic preferences and the height and stature of the user office chairs are usually capable of rotating a full 360 degrees rolling on casters and can adjust the heights of both the seat and the arms. Seat width seat depth seat height from floor slope of seat front to rear armrest height above seat armrest length full armrest armrest width set back of armrest from front seat back height. Chair di