Acre to Square Kilometer Conversion (Convert ac to km^{2})
To convert from acre to square kilometer (ac to km^{2}), please enter value for acre in from input box. You can also convert from square kilometer to acre (km^{2} to ac)
Acre To Square Kilometer Conversion Chart
Acre (ac)  Square Kilometer (km^{2}) 

1 ac  0.004048582995951417 km^{2} 
10 ac  0.04048582995951417 km^{2} 
20 ac  0.08097165991902834 km^{2} 
50 ac  0.20242914979757085 km^{2} 
100 ac  0.4048582995951417 km^{2} 
500 ac  2.0242914979757085 km^{2} 
1000 ac  4.048582995951417 km^{2} 
2000 ac  8.097165991902834 km^{2} 
5000 ac  20.242914979757085 km^{2} 
Convert from acre to square kilometer formula
Total square kilometer = 

For example, if you want to convert 500 acre to square kilometer then,
 = 2.0242914979757085 km^{2} 
Convert from square kilometer to acre formula
Total acre =  Total square kilometer x 247 
2.0242914979757085 km^{2} = 2.0242914979757085 x 247 = 500 ac
Acre
General Information
Unit system  US customary units and the British imperial systems 
Unit of  Area 
Symbol  acre or ac 
The acre is a unit of land area used in the imperial and US customary systems. It is traditionally defined as the area of one chain by one furlong (66 by 660 feet), which is exactly equal to 10 square chains, 1⁄640 of a square mile, or 43,560 square feet, and approximately 4,047 m2, or about 40% of a hectare. Based upon the International yard and pound agreement of 1959, an acre may be declared as exactly 4,046.8564224 square metres. One recognised symbol for the acre is ac,but the word "acre" is also used as the symbol.
Square Kilometer
A square kilometer (symbol: km^{2}) is based on the SI unit of measurement of area, the square meter. It is the area inside a square that has each side equal to 1 kilometer (1000 meters).