Area for rooms, floors and walls — rectangle, triangle or circle, in feet and meters.
Add 5–10% for cuts and waste when ordering flooring or paint.
Rectangle = length × width. Triangle = ½ × base × height. Circle = π × radius². Results convert automatically to square meters (× 0.0929) and square yards (÷ 9).
Tile, carpet, hardwood and paint from trusted retailers.
Rectangle: length × width. Triangle: 0.5 × base × height. Circle: π × radius². Use the same unit throughout.
144 ft² (12 × 12), about 13.38 m².
9 ft² = 1 yd². Divide square feet by 9 for square yards (carpet is often sold this way).
5–10% for normal layouts, up to 15% for lots of cuts and angles.
Split it into rectangles, triangles and circles, add each area together.