How many square feet in a square yard?
One square yard equals 9 square feet. Divide total sq ft by 9 to get sq yd.
Square Yard Calculator for Carpet
Carpet is priced and ordered in square yards, not square feet. We total your rooms, add waste, divide by 9, and round up — so the number you give the store matches what rolls off the truck.
Rooms
ft
in
ft
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Project settings
Default 10%
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Use the installed or material quote converted to square feet
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Square feet to square yards — the conversion
Divide total square footage by 9. A 12×12 room is 144 sq ft ÷ 9 = 16 square yards. Carpet rolls are typically 12 feet wide, so the installer plans seams from your sq yd total.
With 10% waste, that 144 sq ft room needs about 17.6 sq yd — round up to 18 square yards at the counter.
Patterned and berber carpet waste
Plain carpet in a rectangular room often works at 10% waste. Patterned carpet, berber loops, and rooms with many corners may need 15% for pattern matching and seaming.
Our how to choose carpet for rooms guide covers pile height, fibre type, and when pattern matters.
Carpet pad is a separate line item
Order the same square yards of pad as carpet — this calculator is carpet face fibre only. See carpet pad guide for density and moisture barrier choices.
For a full carpet estimate with sq ft and sq yd side by side, try the carpet calculator.
Related guides
Frequently asked questions
How much carpet waste should I add?
10% is typical for plain carpet. Patterned or berber carpet may need 15% for pattern matching.
Is pad included?
Order the same square yards of carpet pad separately — this calculator is carpet area only.
Related calculators
Flooring Box Calculator · https://flooringboxcalculator.com/square-yard-calculator/