How do I determine the correct seat width for an ergonomic chair?

The seat should be 1–2 inches wider than your hips on each side when you're seated — for most adults this means a seat of 18"–20" works well, while larger-frame users need 21"–25" wide seats. Too narrow a seat creates pressure on the outer hips; too wide and the armrests can't reach a comfortable position for forearm support. Most standard ergonomic chairs are built for hip widths of 16"–20", which covers roughly 85% of users. If you're outside that range, look for specifically sized models. FindOfficeFurniture.com can help you find the right seat width — call 888-719-4960.