Instant · Precise · Universal
23 units available
6 categories total
To convert US survey mi² to km²: multiply by 2.590. To international mi²: multiply by ~1.000004.
1 mi² (US) ≈ 2,589,998.47 m². Differs from international mi² (2,589,988.11 m²) by about 10.36 m².
For example, 1 Square Mile (US Survey) (mi² (US)) = 3097612.39 Square Yard (yd²).
| Square Mile (US Survey) (mi² (US)) | Square Yard (yd²) |
|---|---|
| 0.1 | 309761.239 |
| 0.5 | 1548806.195 |
| 1 | 3097612.39 |
| 2 | 6195224.781 |
| 5 | 15488061.95 |
| 10 | 30976123.9 |
| 25 | 77440309.76 |
| 50 | 154880619.5 |
| 100 | 309761239 |
| 500 | 1548806195 |
| 1000 | 3097612390 |
The US survey square mile is a historical area unit based on the US survey foot, equal to approximately 2,589,998.47 m².
1 mi² (US) ≈ 2,589,998.47 m². Differs from international mi² (2,589,988.11 m²) by about 10.36 m².
To convert US survey mi² to km²: multiply by 2.590. To international mi²: multiply by ~1.000004.
Historical US Public Land Survey System sections (each nominally 1 mi² US survey).
Over one square mile, the US survey definition differs from the international definition by about 10.4 m² — roughly a 3 m × 3.5 m room.
Using the US survey mile for new calculations. Deprecated since 2023 — use the international definitions.
The US Survey system was a legacy from 1893. Its 2023 retirement unified US measurements with the international standard.
The square yard is an imperial unit of area equal to the area of a square with sides of one yard (0.8361 m², or 9 square feet).
1 yd² = 9 ft² = 1,296 in² = 0.8361 m². 4,840 yd² = 1 acre.
To convert yd² to m²: multiply by 0.8361. To ft²: multiply by 9. To acres: divide by 4,840.
Carpet and flooring purchases, fabric bolts, concrete paving, and garden area calculations.
Carpet is traditionally sold by the square yard in the US, though some retailers have switched to square feet.
Forgetting 1 yd² = 9 ft², not 3 ft². A yard is 3 ft, but area requires squaring: 3² = 9.
Picture a square 3 feet on each side — that's 1 square yard (9 square feet). Great for carpet shopping math.



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