AD
km² to ac
AD
Square Kilometer
- Definition: A square kilometer is a unit of area measurement that is equivalent to a square with sides of one kilometer in length.
- Symbol: The symbol for square kilometer is “km²”.
- Usage: Square kilometers are commonly used to measure large land areas, such as cities, countries, or parks.
Acre
- Definition: An acre is a unit of area that is traditionally used in the United States and the UK, equivalent to 43,560 square feet or about 4,047 square meters.
- Symbol: The symbol for acre is “ac”.
- Usage: Acres are often used in agriculture, real estate, and land planning to describe plots of land.
Origin of the Square Kilometer
- The square kilometer, like the kilometer itself, is part of the metric system which was developed in France during the late 18th century. The metric system was designed to provide a universal standard for measurement, and the square kilometer was introduced to measure large areas efficiently.
Origin of the Acre
- The acre has its roots in medieval England, where it was originally defined as the amount of land that could be plowed by a team of oxen in one day. The term “acre” comes from the Old English word “aecer,” which means “open field.” Over time, the definition became standardized to the current measurement.
Square Kilometer to Acre Conversion
Conversion Table:
km² | ac |
1 square km | 247.105 ac |
2 square km | 494.21 ac |
5 square km | 1,235.525 ac |
10 square km | 2,471.05 ac |
20 square km | 4,942.1 ac |
Practical Applications
Everyday Use Cases
- Land Measurement: Many homeowners and buyers refer to acres when discussing the size of their property.
- Gardening: Gardeners often plan their plantings and layouts based on the acreage available for cultivation.
Professional Applications
- Real Estate: Real estate agents frequently use acres to describe the size of properties for sale, especially in rural areas.
- Agriculture: Farmers measure their land in acres to determine crop yields and agricultural practices.
Scientific Research
- Environmental Studies: Researchers use acres and square kilometers to measure land use changes and conservation efforts.
- Urban Planning: Urban planners assess land areas in both acres and square kilometers to design sustainable cities and manage resources effectively.