What are the dimensions of a standard-sized sofa?

Standard-sized sofas typically measure 32 to 40 inches deep by 72 to 84 inches wide with a seat height of 14 to 18 inches. The designer's choice of styling, personal space limits and ergonomic support can affect the sofa's depth, width and height.

By comparison, a typical loveseat measures 35 inches deep by 60 inches wide, and an average armchair is about 35 inches deep by 35 inches wide.

When arranging furniture, leaving a buffer of 12 to 18 inches between the sofa and coffee table or at least 30 inches of space in front a sofa without a coffee table provides sufficient walking space and avoids a cluttered appearance.