Carpet Square Foot
Calculator — Flooring Estimator

Measure the room length and width in feet, then multiply them together to get square footage. Add 10% for waste from seams and cuts. A 12×15 room needs 180 sq ft of carpet, or 198 sq ft with the 10% waste factor.

A 12×15 room is 180 square feet. With 10% waste, order 198 square feet or about 22 square yards of carpet. Carpet is typically sold by the square yard, so divide square feet by 9.

Yes, always add 10% to 15% extra carpet for waste. Seams, pattern matching, and cuts around corners and doorways create unusable pieces. For patterned carpet, increase the surplus to 15-20%.

Divide square feet by 9 to get square yards. Carpet is commonly priced per square yard. For example, 180 sq ft ÷ 9 = 20 sq yd of carpet.

Carpet costs $1 to $5 per square foot for materials, depending on fiber and quality. Installation adds $0.50 to $1.50 per sq ft. Enter your price per square foot or square yard in the calculator for an instant cost estimate.

Split the L-shaped room into two rectangles. Calculate the area of each rectangle and add them together. Use the L-Shape option in the calculator to enter both sections at once and get total carpet area.