Acre to Square kilometer
Acre (ac)
Square kilometer (km²)
How it is calculated
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