The seat dimensions are among the most crucial factors to consider. A standard electric wheelchair typically features a seat width ranging from 16 to 20 inches. This range accommodates a variety of body types and sizes. It is essential to measure the user’s width at the hips to ensure that the seat fits comfortably without causing pinching or discomfort. The seat depth, which usually measures between 16 to 18 inches, is also crucial. It should allow the user to sit back comfortably while providing adequate support for the thighs.