Acre to Square Kilometer (km²) Conversion
Convert acre to square kilometer (km²) with precision. Enter values and get instant conversions.
Area Converter
1 Acre = 0 Square Kilometer (km²)
Common Conversions
About Acre to Square Kilometer (km²) Conversion
Converting from Acre to Square Kilometer (km²) is a common area conversion.
This online converter allows you to easily convert between acre and square kilometer (km²), providing instant results with high precision.
Acre
Definition: An acre is a unit of land area used in imperial and US customary systems. Traditionally defined as the area of one chain (66 feet) by one furlong (660 feet), which equals exactly 43,560 square feet or about 4,047 square meters (0.4047 hectares).
History: Dating back to medieval England, the acre represented the amount of land a yoke of oxen could plow in one day. It was standardized to its current definition in the British Imperial system and later adopted by the US.
Current use: Widely used in the United States for measuring large plots of land, farms, and real estate. Still appears in UK property descriptions despite metrication. Common in agriculture and forestry in countries using imperial measurements.
Square Kilometer (km²)
Definition: A square kilometer (symbol: km²) is a multiple of the square meter, equal to the area of a square with 1 kilometer (1000 meters) on each side. One square kilometer equals 1,000,000 square meters or approximately 0.3861 square miles.
History: Developed as part of the metric system's decimal-based scaling, the square kilometer became particularly useful for geographical measurements. Its adoption grew with the metric system's international acceptance in the 19th and 20th centuries.
Current use: Primarily used to measure large land areas such as cities, national parks, and countries. Commonly appears in geographical surveys, urban planning, and environmental studies. Most world maps and atlases use square kilometers, though some US publications still use square miles.
Details
- From: Acre
- To: Square Kilometer (km²)
- Formula: 1 Acre = 0.0040468564 km²
- Example: 25 Acre = 0.1011714106 km²
Acre to Square Kilometer (km²) Conversion Table
| Acre | Square Kilometer (km²) |
|---|---|
| 0.01 | 0.0000404686 |
| 0.1 | 0.0004046856 |
| 1 | 0.0040468564 |
| 2 | 0.0080937128 |
| 3 | 0.0121405693 |
| 5 | 0.0202342821 |
| 10 | 0.0404685642 |
| 20 | 0.0809371284 |
| 50 | 0.2023428211 |
| 100 | 0.4046856422 |
| 1000 | 4.0468564224 |