Instant · Precise · Universal
23 units available
6 categories total
To convert mi² to km²: multiply by 2.59. To acres: multiply by 640. To hectares: multiply by 259.
1 mi² = 640 acres = 27,878,400 ft² = 2.59 km² = 259 ha.
For example, 1 Square Mile (mi²) = 3097600 Square Yard (yd²).
| Square Mile (mi²) | Square Yard (yd²) |
|---|---|
| 0.1 | 309760 |
| 0.5 | 1548800 |
| 1 | 3097600 |
| 2 | 6195200 |
| 5 | 15488000 |
| 10 | 30976000 |
| 25 | 77440000 |
| 50 | 154880000 |
| 100 | 309760000 |
| 500 | 1548800000 |
| 1000 | 3097600000 |
The square mile is an imperial unit of area equal to the area of a square with sides of one mile (2.59 km²).
1 mi² = 640 acres = 27,878,400 ft² = 2.59 km² = 259 ha.
To convert mi² to km²: multiply by 2.59. To acres: multiply by 640. To hectares: multiply by 259.
City areas, county sizes, population density, land surveys, and geographic comparisons.
Manhattan is about 22.8 mi². The state of Texas is 268,596 mi². Rhode Island (smallest US state) is 1,214 mi².
1 mi ≈ 1.609 km, but 1 mi² ≈ 2.59 km² (not 1.609). Area conversion squares the factor.
1 mi² = 640 acres. This 'section' (640 acres) is the basis of the US Public Land Survey System grid.
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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