Square Kilometer To Acre Conversion Chart

Square Kilometer (km2) Acre (ac)
1 km2247 ac
10 km22470 ac
20 km24940 ac
50 km212350 ac
100 km224700 ac
500 km2123500 ac
1000 km2247000 ac
2000 km2494000 ac
5000 km21235000 ac

Convert from square kilometer to acre formula

Total acre = Total square kilometer x 247

For example, if you want to convert 25 Square Kilometer to Acre then,

25 km2 = 25 x 247 = 6175 ac

Convert from acre to square kilometer formula

Total square kilometer =
Total acre
6175 ac
= 25 km2

Square Kilometer

A square kilometer (symbol: km2) 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).


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.