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Easily convert Acre (ac) to Square kilometer (km²) in the Area category with ConvertOnline's efficient tool.
An acre (ac) is a unit of area commonly used in the United States and some other countries to measure land. It is traditionally defined as the area of a rectangle that is 66 feet wide by 660 feet long, resulting in 43,560 square feet.
A square kilometer (km²) is a metric unit of area that represents the area of a square with sides measuring one kilometer in length. It is commonly used to measure large land areas, such as countries, cities, and other geographical regions.