Find square yards from dimensions or a known area, compare price-per-area quotes, and separate net area from a chosen purchasing allowance.
How to use this tool
- Choose dimensions or a known area as the starting point.
- Enter measurements in the selected units, then any explicit purchasing allowance.
- Enter an optional quote and choose its actual area-price basis. Changing a price basis reinterprets that quoted number; match the supplier’s quote.
- Select Calculate. Compare net area, allowance area and the normalised price. Plan roll cuts separately.
Formula and unit basis
Square yards = length(ft) × width(ft) ÷ 9, or known area(ft²) ÷ 9. One yd² equals exactly 9 ft² and 0.83612736 m². Cost uses the area expressed in the selected price unit.
Worked examples
A 12 ft × 15 ft rectangle contains 180 ft², or 20 yd². A quote of 3 per ft² is equivalent to 27 per yd² and gives the same net-area material cost of 540.
Assumptions and interpretation
A square yard is area; a linear yard from a roll is length at a specified width. Net area and a percentage allowance do not create a cutting layout, account for pile direction or guarantee enough roll goods. Use a supplier-approved layout for actual roll orders.
Project guides
- Compare Square-Yard and Square-Foot Prices without a Ninefold Error
- Carpet Roll Width and Cut Layout: Why Net Square Yards Are Not the Order
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Explore Construction calculators or return to the GreenCalc home page for other subjects.
Frequently asked questions
Why divide square feet by nine?
A square yard is a square three feet on each side, so it contains 3 × 3 = 9 square feet.
Can I compare quotes per square foot and square yard?
Yes. Select the quoted price basis so cost is calculated from the matching area unit.
Is net square yardage enough for a carpet order?
Not necessarily. Roll width, cutting direction, seams and pattern repeats can change the purchased quantity.