To convert US survey acres to square miles, multiply the value by 0.00156251. To go the other way, multiply square miles by 639.997 to get US survey acres.
| US Survey Acres (ac (US)) | Square Miles (mi²) |
|---|---|
| 1 ac (US) | 0.00156251 mi² |
| 2 ac (US) | 0.00312501 mi² |
| 5 ac (US) | 0.00781253 mi² |
| 10 ac (US) | 0.0156251 mi² |
| 20 ac (US) | 0.0312501 mi² |
| 50 ac (US) | 0.0781253 mi² |
| 100 ac (US) | 0.156251 mi² |
| 500 ac (US) | 0.781253 mi² |
| 1,000 ac (US) | 1.56251 mi² |
25 ac (US) × 0.00156251 = 0.0390627 mi²
Try this example →250 ac (US) × 0.00156251 = 0.390627 mi²
Try this example →US survey acre (ac (US)). The US survey acre is 43,560 square US survey feet (4,046.8726 m²), used in US land records.
Square mile (mi²). A square mile is 640 acres (2.58999 km²).
There are 0.00156251 square miles in one US survey acre.
Multiply the number of US survey acres by 0.00156251. For example, 10 US survey acres equal 0.0156251 square miles.
One square mile equals 639.997 US survey acres.