Square kilometers to acres (km2 to ac) area units conversion factor is 247.105381. To find out how many acres in square kilometers, multiply by the conversion factor or use the converter.
1 Square Kilometer = 247.105381 Acres
There are 247.105381 acres in a square kilometer, because an acre is defined as an area of 66 feet * 660 feet ( = 4046.86 square meters) and one square kilometer is one million sq. meters (1000 m * 1000 m = 1 000 000 m2), that makes 1 000 000 / 4046.86 = 247.1 acres in a square kilometer.
For example, to find out how many acres there are in a square kilometer and a half, multiply the sq. kilometer value by 247.1, that makes 1.5 km2 * 247.1 = 370.6 acres in 1.5 sq. kilometers.
Square kilometer is a metric system area unit and equals to 247.105 acres, 100 hectares and 0.386 sq. miles. The abbreviation is "km^{2}".
Acre is an imperial and US customary area unit and equals to 0.404 hectares, 43560 sq. feet and 4046.86 sq. meters. The abbreviation is "ac".