How wide should an office chair seat be?

Standard commercial office chairs have seat widths of 17–20 inches, with 18–19 being the most common. Big-and-tall chairs run wider at 20–24 inches. The right width leaves roughly 1–2 inches of clearance between each hip and the seat edge — tight enough to feel supported, not so tight it creates pressure. FindOfficeFurniture.com lists seat width on every chair — call 888-719-4960 if you need help matching dimensions to specific users.