You can tell if your sofa fits your living room by testing layouts virtually before buying or rearranging. Measure your room and ensure at least thirty to thirty-six inches of clearance for walkways around furniture. Anchor your seating zone with a properly sized rug and arrange furniture to maintain natural flow and comfort. This prevents cramped feelings and improves circulation, making any sofa size work well. Use room planning tools or painter's tape for visual testing to find your best arrangement.