What are the standard dimensions for living room furniture?

Standard Sofa Dimensions
‌Single-seater sofa‌: Length 80–95, depth 85–90, seat height 35–42, backrest height 70–90
‌Two-seater sofa‌: Length 126–150, depth 80–90, seat height 35–42, backrest height 70–90
‌Three-seater sofa‌: Length 175–196, depth 80–90, seat height 35–42, backrest height 85–90
‌Four-seater sofa‌: Length 232–252, depth 80–90, seat height 35–42, backrest height 70–90

Standard Coffee Table Dimensions
‌Rectangular‌: Small (length 60–75, width 45–60); Medium (length 120–135); Large (length 150–180, width 60–80); Overall height 38–50
‌Square‌: Common side lengths 80, 100, 120; Height 40–50
‌Round‌: Common diameters 75, 90, 105, 120; Height 33–42