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Flooring & Tile Calculator: Sq Ft, Boxes and Tiles

How much flooring do I need? Enter the room in feet and inches, add 10% extra, and get boxes of laminate or vinyl plank, or tiles and boxes of tile.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: Scope: how much floor covering to buy for one room (plus one extra part such as a closet, nook or the other leg of an L-shaped room) or for a floor area you already know in square feet. It works for any flooring sold by the box with the square feet printed on the label (laminate, vinyl plank, engineered or solid hardwood, carpet tile) and for rectangular tile sized in inches. Area = length × width (Tarkett and The Home Depot), split odd rooms into rectangles and add them up (The Home Depot), extra for cuts and mistakes is your choice (The Home Depot suggests 5 to 10%, Tarkett about 15%), tile area uses NIST Handbook 44 (1 sq ft = 144 sq in). Boxes and tiles are always rounded up to whole ones. Not included: stairs, walls and backsplashes, curved rooms, grout-line spacing (the tile count is slightly high), pattern repeats, underlayment, trim, adhesive, labor, tax and delivery. Always follow the flooring maker’s directions on the box. Everything stays in this browser tab; nothing is sent or saved. Independent ToolsKo estimate. Sources reviewed November 11, 2026.

How to use it (step by step)

  1. 1Measure the room wall to wall in feet (12 or 12.5) or feet and inches (12' 6"). For a closet, nook or L-shaped room, put the second rectangle in “Extra part”. If you already know the square feet, choose “I know the square feet”.
  2. 2Pick what you are buying. For planks, laminate or vinyl, type the square feet per box from the box label. For tile, type the tile size in inches and, if you know it, the tiles per box.
  3. 3Keep 10% extra (or type your own) and read the boxes or tiles to buy. Add a price per square foot for a cost estimate.

Words to know

Square foot (sq ft)
The area of a square 1 foot on each side. A room 12 ft by 10 ft is 12 × 10 = 120 square feet.
Waste or overage
Extra flooring you buy for cuts at the walls, broken pieces and mistakes. Leftover boxes are handy for repairs later.
Coverage per box
How many square feet one box covers. It is printed on the box or the product page, for example 20 sq ft per box.
Square yard (sq yd)
A square 3 feet on each side, which is 9 square feet. Carpet is often priced per square yard.

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Sources & methods

References checked November 11, 2026. Read each tool’s scope and assumptions before relying on its result.

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