Square Yards to Acres
Convert square yards (yd²) to acres (ac). Both measure surface measurement, and the conversion comes up in real estate, farming, construction work.
The Formula
``
acres = square yards × 0.000206611570248
square yards = acres × 4840
`
One square yard is 2.0661e-4 acres, and one acre is 4,840 square yards.
Conversion Table
| Square Yards | Acres |
|---|---|
| 1 yd² | 2.0661e-4 ac |
| 2 yd² | 4.1322e-4 ac |
| 5 yd² | 0.001033 ac |
| 10 yd² | 0.002066 ac |
| 25 yd² | 0.005165 ac |
| 50 yd² | 0.010331 ac |
| 100 yd² | 0.020661 ac |
| 500 yd² | 0.103306 ac |
| 1,000 yd² | 0.206612 ac |
The Other Direction
| Acres | Square Yards |
|---|---|
| 1 ac | 4,840 yd² |
| 2 ac | 9,680 yd² |
| 5 ac | 24,200 yd² |
| 10 ac | 48,400 yd² |
| 25 ac | 121,000 yd² |
| 50 ac | 242,000 yd² |
| 100 ac | 484,000 yd² |
| 500 ac | 2,420,000 yd² |
| 1,000 ac | 4,840,000 yd² |
What Each Unit Is
Square Yards (yd²) — nine square feet, or 0.836127 square metres. The imperial unit for carpet, turf and concrete.
Acres (ac) — exactly 4,046.8564224 square metres, or one furlong by one chain. The area a yoke of oxen could plough in a day — long and thin, because turning wasted time.
A Sense of Scale
Carpet is priced per square yard- A small rug is about 4 yd²
- An American football field is 1.32 acres
- A soccer pitch is about 1.8 acres
Precision
The factor 0.000206611570248 is rounded. For engineering work carry more digits than the table above, and round only at the end — rounding at each step compounds.
In Code
`javascript
const squareYardToAcre = (value) => value * 0.000206611570248;
``
Where This Conversion Comes Up
- Real estate
- Farming
- Construction
- Landscaping
- Flooring
How Many Decimals Do You Need?
Rounding the factor costs accuracy, and how much depends on the factor. Converting 137 yd² with the factor truncated at each decimal place:
| Decimals kept | Factor | 137 yd² becomes | Error |
|---|---|---|---|
| 0 | 0 | 0 | 100.0000% |
| 1 | 0 | 0 | 100.0000% |
| 2 | 0 | 0 | 100.0000% |
| 3 | 0 | 0 | 100.0000% |
| 4 | 0.0002 | 0.0274 | 3.2000% |
The right number of significant figures is set by your input, not by the converter. If you measured square yards to three significant figures, the answer in acres is only good to three — writing more digits claims precision the measurement never had.