ac to km²
39 unitsResult4.046856e-3
0.004046856422km²
1 ac × 0.004046856422 = 0.004046856422 km²
Convert Acre to Square kilometer (ac to km²)
1 acre = 0.004046856422 square kilometers. Convert acres to square kilometers instantly, with the exact factor, the formula and a reference table of common values.
Formula
square kilometers = acres × 0.004046856422
ac to km² conversion table
| ac | km² |
|---|---|
| 1 ac | 0.004046856422 km² |
| 2 ac | 0.008093712845 km² |
| 3 ac | 0.01214056927 km² |
| 5 ac | 0.02023428211 km² |
| 10 ac | 0.04046856422 km² |
| 20 ac | 0.08093712845 km² |
| 50 ac | 0.2023428211 km² |
| 100 ac | 0.4046856422 km² |
| 250 ac | 1.011714106 km² |
| 500 ac | 2.023428211 km² |
| 1000 ac | 4.046856422 km² |
What is a acre?
An acre is the traditional English and American unit of land area, equal to 4,046.8564224 square meters. It was originally the amount of land a pair of oxen could plow in one day.
Land, farms and building lots in the United States and UK are still sold by the acre. A football field, including the end zones, is about 1.3 acres, and 640 acres make a square mile.
In writing, the acre is usually shortened to "ac". One acre is 4046.856422 square meters, and that ratio is what every number on this page is built from.