Carpet Area & Cost
Calculate the carpet needed for one or more rooms, including waste, roll length and cost, free online.
About this calculator
Enter room sizes as length × width (for example "5x4, 3.5x3"). The total area is increased by a waste allowance for cuts and pattern matching. Broadloom carpet comes in rolls 3.66 m (12 ft) or 4 m wide; the roll length needed is the area ÷ roll width.