Square Yards Calculator
Convert a room or lot measurement into square yards. Enter length and width in feet, inches, or yards (mix and match), and get square yards, square feet, and square meters — plus total cost if you enter a price per square yard.
Example: with Length 15 · Length unit feet · Width 12 · Width unit feet · Price per sq yd ($, optional) 25 → Area: 20 sq yd.
- In square feet180 sq ft
- In square meters16.72 m²
- Cost at that price$500
Computed by the calculator below using its default values. Change any input to see your own numbers.
A square yard is 3 ft × 3 ft = 9 square feet. Divide square feet by 9 — not by 3, the classic error.
Why square yards still matter
Carpet, artificial turf, and some landscape fabrics are still quoted per square yard in the US, while rooms get measured in feet and inches. The conversion is simple but easy to fumble: one square yard is a 3 × 3 foot square, so it holds 9 square feet, not 3. A 15 × 12 foot room is 180 square feet, which is exactly 20 square yards. This calculator lets each dimension carry its own unit, so a 108-inch runner by a 9-foot hall converts cleanly without scratch-pad math.
For a price quoted per square yard, multiply straight through: 20 square yards at $25 installs for about $500 in material.
Ordering flooring by the yard
Broadloom carpet comes on 12-foot (4-yard) wide rolls, so real orders get rounded up to full widths and often include seam waste — figure 5–10% over the bare area for a simple room, more for stairs and patterned carpet that must match at seams. Use the bare square yardage here for comparison shopping, then let the installer's cut sheet set the final order.
How it’s calculated
All dimensions convert to feet (inches ÷ 12, yards × 3), then area = length × width in sq ft. Square yards = sq ft ÷ 9. Square meters = sq ft × 0.09290304 (exact NIST factor). Cost = square yards × price, rounded to the dollar.
Computes bare geometric area — real flooring orders add 5–10% for seams, pattern match, and roll-width rounding.
Quick square feet to square yards
| Square feet | Square yards |
|---|---|
| 90 | 10 |
| 180 | 20 |
| 270 | 30 |
| 450 | 50 |
| 900 | 100 |
Computed as sq ft ÷ 9 (1 sq yd = 9 sq ft exactly).
Common mistakes
- Dividing square feet by 3 instead of 9 — the linear factor is 3, but area scales by its square.
- Mixing units without converting: a 15 ft × 4 yd room is 15 × 12 feet, not 15 × 4.
- Ordering the bare yardage for carpet and forgetting seam and roll-width waste.
- Confusing square yards with cubic yards when talking to a landscaping supplier — one is area, the other volume.
Frequently asked questions
What is the square yards formula?
Square yards = (length in feet × width in feet) ÷ 9. A square yard is a 3 × 3 foot square, so it contains 9 square feet.
How many square feet are in a square yard?
Nine. The yard is 3 feet on a side, and area scales with the square of length: 3 × 3 = 9. Dividing by 3 is the most common conversion mistake.
Why is carpet sold by the square yard?
Tradition from the textile trade — broadloom is woven on 12-foot looms, exactly 4 yards wide. Many retailers now quote per square foot too; multiply a per-sq-yd price by 1/9 (about 0.111) to compare.
How do I convert square yards to square meters?
Multiply by 0.8361 (1 yd = 0.9144 m exactly, squared). This calculator shows m² automatically — 20 sq yd is about 16.72 m².