Calculator — Conversions & Core
Square Yard Calculator
Convert square feet to square yards and back — the carpet conversion, with square metres for reference.
Inputs
Results
Adjust the inputs to see your result.
About this calculator
Carpet is priced by the square yard while rooms are measured in square feet, so every carpet quote forces this conversion. One square yard is a 3 × 3 ft square — 9 sq ft — and that single number is the whole calculation, in both directions.
What this number means
The square yard survives for one reason: carpet. Carpet is priced and ordered by the square yard in the US, while rooms are measured in square feet — so every carpet quote forces this conversion. One square yard is a 3 × 3 ft square, which is 9 sq ft, and that single number is the whole conversion.
The trap is confusing square yards with cubic yards or linear yards. A cubic yard is a volume (27 cu ft) used for concrete and soil; a linear yard is a length (3 ft) used for fabric and carpet roll length. None of them converts with ÷ 9 except square yards, and mixing them up is how a 20 sq yd carpet order becomes a 20 cu yd concrete order.
The formula
- Square yards = Square feet ÷ 9
- Square feet = Square yards × 9
- Square metres = Square feet × 0.092903 (shown for reference)
- Why 9: 1 sq yd = 3 ft × 3 ft = 9 sq ft
Worked example
A 12 × 15 ft bedroom floor.
- Area in square feet: 12 × 15 = 180 sq ft
- Convert: 180 ÷ 9 = 20 sq yd (16.72 sq m)
- Reversed: 20 sq yd × 9 = 180 sq ft
Assumptions and limitations
- The conversion is exact: 1 sq yd = 9 sq ft, with no waste allowance. Carpet orders need waste on top — the Carpet Calculator handles roll widths, seams and direction.
- Square metres are shown rounded to two decimals (1 sq ft = 0.092903 sq m exactly).
- This is an area conversion only. For volumes (concrete, soil, mulch) use the Cubic Yard Calculator — cubic yards divide by 27, not 9.
Frequently asked questions
9. A square yard is 3 ft by 3 ft, so 3 × 3 = 9 sq ft. Divide square feet by 9 to get square yards; multiply square yards by 9 to get square feet.
The room is 180 sq ft, which is exactly 20 sq yd. Carpet is sold by the square yard, so quote and compare prices in square yards — but order through the Carpet Calculator, which also accounts for 12 ft roll widths and seams.
No. A square yard is area (9 sq ft); a cubic yard is volume (27 cu ft) and is used for concrete, soil and mulch. The two are never interchangeable — a 20 sq yd carpet order and a 20 cu yd concrete order differ by a factor of three in each dimension.
Multiply square yards by 0.836127, or go through square feet: square yards × 9 × 0.092903. The worked example's 20 sq yd is 16.72 sq m.
Tradition from the textile trade, where cloth was sold by the yard. Carpet rolls are 12 ft (4 yd) wide, so a square yard maps neatly onto roll pricing — one linear yard of a 12 ft roll is 4 sq yd.
Not to the conversion itself — it is exact. Add waste when ordering: 5–10% for carpet depending on room shape and pile direction, handled by the Carpet Calculator rather than this converter.