Carpet Calculator

The calculation engine relies on standard geometric formulas tailored to different room layouts. First, you select your room shape. For a rectangular space, the area is calculated by multiplying width by length (areaRect = widthRect * lengthRect). For circular layouts, it applies the area of a circle equation using the radius (areaCirc = pi * radiusCirc^2). Elliptical areas multiply semi-axes by pi (areaEli = axisA * axisB * pi), while regular polygons like pentagons and hexagons utilize side-length formulas involving square roots. Finally, the tool multiplies your total calculated area by your designated price per unit to output your estimated total cost.

Imagine you want to carpet a rectangular living room that measures 12 feet wide by 15 feet long. First, compute the total area by multiplying the width by the length: 12 ft * 15 ft = 180 square feet. Next, suppose your chosen carpet material costs $4.50 per square foot. To find the total material cost, multiply the area by the unit price: 180 sq ft * $4.50 = $810.00. Therefore, you will need 180 square feet of material with a projected material expense of $810 before accounting for installation labor or waste margins.

Always measure the longest and widest points of your room, including any door alcoves or recessed wall spaces, and round up to the nearest inch. It is an industry best practice to add a 5% to 10% waste buffer to your final area calculation to account for trimming, pattern matching, and installation errors. Finally, verify whether your unit pricing is quoted in square feet or square yards to ensure your calculations align correctly with supplier quotes.