Acres to square kilometers 

The calculator allows you to convert acres to square kilometers (ac to km2). Perform the reverse calculation: square kilometers to acres 
1 square kilometer = 247.105381 acres (approximately equal to) 
To convert acres to square kilometers, multiply by 0.00404686 (approximately). ExamplesTo convert acres to km2, you can use the conversion formula:1 ac = 0.00404686 km2 You can find below five examples of converting acres to square kilometers: Example 1: convert 10 acres to square kilometers:10 ac = 10 x 0.00404686 = 0.0404686 km²Example 2: convert 25 acres to square kilometers:25 ac = 25 x 0.00404686 = 0.1011715 km²Example 3: convert 50 acres to square kilometers:50 ac = 50 x 0.00404686 = 0.202343 km²Example 4: convert 75 acres to square kilometers:75 ac = 75 x 0.00404686 = 0.3035145 km²Example 5: convert 100 acres to square kilometers:100 ac = 100 x 0.00404686 = 0.404686 km²Conversion table acres to square kilometers (ac to km2)
AcresAn acre is a unit of area used in the imperial and US customary systems. It is defined as the area of one chain by one furlong (66 feet by 660 feet), which is exactly 10 square chains or 43 560 square feet. An acre is about 40% of a hectare (the SI unit of area). The symbol for acre is "ac". The word "acre" comes from Old English æcer, which means "field". The term was first used in the context of land measurement in the 14th century. In the United States, the acre is legally defined as an area of 43 560 square feet or 4 840 square yards. This definition was established by the international yard and pound agreement of 1959.Square kilometersA square kilometer (km²) is a unit of area. The symbol for square kilometers is "km²," where "km" represents kilometers and "²" denotes the unit of area squared. 