// Surveyor Tools
How many acres are in a square mile?
1 square mile = 640 acres
1 acre = 0.001563 square miles
A square mile is exactly 640 acres, which is also one section in the US Public Land Survey System. A quarter section is 160 acres.
Quick conversion
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Conversion table
| Square mile (mi²) | Acre |
|---|---|
| 1 | 640 |
| 2 | 1,280 |
| 3 | 1,920 |
| 4 | 2,560 |
| 5 | 3,200 |
| 10 | 6,400 |
| 20 | 12,800 |
| 50 | 32,000 |
| 100 | 64,000 |
| Acre | Square mile (mi²) |
|---|---|
| 1 | 0.001563 |
| 2 | 0.003125 |
| 3 | 0.004688 |
| 4 | 0.00625 |
| 5 | 0.007813 |
| 10 | 0.01563 |
| 20 | 0.03125 |
| 50 | 0.07813 |
| 100 | 0.1563 |
How big each land unit is
| Unit | In m² | In hectares | Where it is used |
|---|---|---|---|
| Square mile (mi²) | 2,589,988.11 | 259 | USA, UK |
| Acre | 4,046.86 | 0.4047 | USA, UK, Canada, India, Pakistan, Australia |
FAQ
How many hectares are in a square mile?
About 259 hectares (2.59 km²).
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