Acre to Square kilometer
acre to square kilometer Conversion Table
| acre (ac) | square kilometer (km²) | |
|---|---|---|
| 0.01 ac | → | 0.0000404686 km² |
| 0.1 ac | → | 0.000404686 km² |
| 1.0 ac | → | 0.00404686 km² |
| 2.0 ac | → | 0.00809372 km² |
| 3.0 ac | → | 0.01214058 km² |
| 5.0 ac | → | 0.0202343 km² |
| 10.0 ac | → | 0.0404686 km² |
| 20.0 ac | → | 0.0809372 km² |
| 30.0 ac | → | 0.1214058 km² |
| 50.0 ac | → | 0.202343 km² |
| 100.0 ac | → | 0.404686 km² |
| 1000.0 ac | → | 4.04686 km² |
Example Conversion
To convert from acre to square kilometer, multiply by 0.00404686.
For example: 22 acre = 22 × 0.00404686 = 0.08903092 square kilometer
Unit History
About acre
The acre is a traditional unit of area in the imperial system, still widely used in the United States and the United Kingdom for land transactions. Historically, an acre was roughly the amount of land one person could plow in a single day with a team of oxen. Today, one acre equals about 4,047 square meters.
About square kilometer
The square kilometer represents one million square meters. As a measure of area, it is especially useful for describing large tracts of land, such as cities, national parks, or entire regions. Square kilometers are standard in many international datasets involving geography and environmental statistics.