Convert square millimetre (mm²) to acre (ac) instantly
| Square Millimetres (mm²) | Acres (ac) |
|---|---|
| 0.001 mm² | 2.4711e-13 ac |
| 0.01 mm² | 2.4711e-12 ac |
| 0.1 mm² | 2.4711e-11 ac |
| 0.5 mm² | 1.2355e-10 ac |
| 1 mm² | 2.4711e-10 ac |
| 2 mm² | 4.9421e-10 ac |
| 5 mm² | 1.2355e-09 ac |
| 10 mm² | 2.4711e-09 ac |
| 20 mm² | 4.9421e-09 ac |
| 50 mm² | 1.2355e-08 ac |
| 100 mm² | 2.4711e-08 ac |
| 200 mm² | 4.9421e-08 ac |
| 500 mm² | 1.2355e-07 ac |
| 1000 mm² | 2.4711e-07 ac |
Area measures two-dimensional space. The hectare (10,000 m²) is used for land. One acre = 4046.86 m². One square mile = 640 acres = 2.59 km².
Formula: ac = mm² × 2.4711e-10