**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**".