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Area
Acres to Square kilometers
Convert acres (ac) to square kilometers (km²). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 ac = 0.004047 km²
Acres to Square kilometers Conversion Table
Common values, ready to copy:
| acres | square kilometers |
|---|---|
| 1 ac | 0.004047 km² |
| 2 ac | 0.008094 km² |
| 5 ac | 0.020234 km² |
| 10 ac | 0.040469 km² |
| 25 ac | 0.101171 km² |
| 50 ac | 0.202343 km² |
| 100 ac | 0.404686 km² |
| 1,000 ac | 4.0469 km² |
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Formula
square kilometers = acres × 0.00404686
Area conversions are derived from length: 1 ft² = (0.3048 m)² = 0.092903 m². 1 acre = 4,046.86 m². 1 hectare = 10,000 m² exactly.
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