Unit Converter › Area › mi² → acre
Area · scale · base square metre
mi² to acre
1 square mile (mi²) = 640 acre. Multiply by 640. One square mile (mi²) is 640 acre.
Convert
scale · base square metre
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| Every unit at once | Value | Unit |
|---|
mi² to acre table
| square mile (mi²) | acre | Unit |
|---|---|---|
| 1 mi² | 640 | acre |
| 2 mi² | 1,280 | acre |
| 3 mi² | 1,920 | acre |
| 5 mi² | 3,200 | acre |
| 10 mi² | 6,400 | acre |
| 20 mi² | 12,800 | acre |
| 25 mi² | 16,000 | acre |
| 50 mi² | 32,000 | acre |
| 100 mi² | 64,000 | acre |
| 500 mi² | 320,000 | acre |
| 1,000 mi² | 640,000 | acre |
the acre is exact
An acre is exactly 4,046.8564224 m², because it is defined from the exact yard. A hectare is exactly 10,000 m² — the two are close but never equal.