Convert Square Kilometers to Acres
Convert Square Kilometers (km²) to Acres (ac) instantly and accurately.
Conversion Formula
ac = km² × 247.1053815
About Square Kilometers
A square kilometer (km²) is a metric unit of area equal to a square with sides of one kilometer (1,000 m × 1,000 m). It is used for measuring large land areas such as cities, forests, lakes, and countries. Manhattan (New York) is about 59 km², and Monaco (the second smallest country) is just over 2 km². This unit is essential in geography, urban planning, forestry, and environmental impact studies.
About Acres
An acre is a traditional unit of land area used primarily in the United States, United Kingdom, and countries with British heritage. One acre equals 43,560 ft² or about 4,047 m². Historically based on the area a yoke of oxen could plow in one day, it remains the standard for measuring agricultural land, residential plots, and rural properties. A football field (without end zones) is roughly 1.32 acres, and most suburban house lots range from 0.25 to 1 acre.
Quick Reference Table
| Square Kilometers (km²) | Acres (ac) |
|---|---|
| 1 km² | 247.105 ac |
| 2 km² | 494.211 ac |
| 5 km² | 1235.53 ac |
| 10 km² | 2471.05 ac |
| 25 km² | 6177.63 ac |
| 50 km² | 12355.3 ac |
| 100 km² | 24710.5 ac |