Room planning calculators

TV Mounting Height Calculator

TV mounting height = your seated eye height to the center of the screen, about 42 in; a 55 in TV then sits with its bottom edge 28.5 in and its top edge 55.5 in above the floor.

Ceiling Fan Size Calculator

Ceiling fan blade span follows room area (a 168 sq ft room takes a 44 in fan) and downrod = ceiling height − 8 ft − 12 in; a 12 ft ceiling needs a 36 in downrod.

Rug Size Calculator

Rug size = furniture footprint plus margin: 24 in past a dining table on every side, 24 in around a bed, and front legs on the rug in a living room; an 84 in sofa needs a 6×9 ft rug.

Curtain Size Calculator

Curtain width = rod length × fullness (1.5 to 2.5), and curtain length = rod height minus where you want the hem; a 48 in window with an 84 in rod height needs an 84 in drop and 120 in of fabric.

Dining Table Size Calculator

Dining table length = seats per side × 24 in, and the room needs 36 in around the table; six seats take a 72 × 36 in table in a room at least 12 × 9 ft.

Chandelier Size Calculator

Chandelier diameter in inches = room length + width in feet (12 × 14 ft gives 26 in), or half to two thirds of the table width, hung 30 to 36 in above the table.