How to convert Acre to Square kilometer

Conversion factor and calculation steps from Acre (ac) to Square kilometer (km²).

Conversion logic

Each unit is defined via the base unit (square meter (m²)). The value is first converted to the base unit, then to the selected unit.

1 ac = 4046.8564224 m²

1 km² = 1000000 m²

1 ac × 4046.8564224 = 4046.8564224 m²

4046.8564224 m² ÷ 1000000 = 0.0040468564224 km²