Acres to Square Kilometers Converter
CommonSquare meters, acres, hectares and more.
How to convert Acres to Square Kilometers
Multiply the acres value by 0.00404686: 1 ac = 0.00404686 km². Going the other way, 1 km² = 247.105 ac, so divide by 0.00404686 or use the Square Kilometers to Acres converter.
About these units
Acres (ac)
An acre is 43,560 square feet, about 4,047 square meters or 0.405 hectares. Historically it was the area a team of oxen could plough in a day.
Square Kilometers (km²)
A square kilometer is one million square meters, about 0.386 square miles or 100 hectares. The areas of cities and countries are given in square kilometers.
Acres to Square Kilometers conversion table
| Acres (ac) | Square Kilometers (km²) |
|---|---|
| 1 ac | 0.00404686 km² |
| 2 ac | 0.00809372 km² |
| 3 ac | 0.0121406 km² |
| 4 ac | 0.0161874 km² |
| 5 ac | 0.0202343 km² |
| 10 ac | 0.0404686 km² |
| 20 ac | 0.0809372 km² |
| 25 ac | 0.101171 km² |
| 50 ac | 0.202343 km² |
| 100 ac | 0.404686 km² |
| 500 ac | 2.02343 km² |
| 1,000 ac | 4.04686 km² |
More acres conversions
- Acres to Square Feet1 ac = 43,560.1 ft²
- Acres to Square Inches1 ac = 6.2726e+6 in²
- Acres to Square Yards1 ac = 4,840.01 yd²
- Acres to Square Miles1 ac = 0.0015625 mi²
- Acres to Roods1 ac = 4.00002 rd
- Acres to Square Meters1 ac = 4,046.86 m²
- Acres to Dunams1 ac = 4.04686 dunam
See every unit on the Area Converter.