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Convert Square Feet to Square Kilometer

Square Feet (ft²)
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Square Kilometer (km²)

Square Feet

A square foot (ft²) is a unit of area commonly used in the imperial system and the U.S. customary system. It is defined as the area of a square with sides that are each 1 foot long. One square foot is equal to 144 square inches or 0.0929 square meters.

Origin:

The square foot is derived from the foot, which was historically based on the length of a human foot. The foot has been used for thousands of years in various cultures and was standardized in England during the 12th century. The square foot, as a unit of area, developed to provide a practical way to measure spaces in both residential and commercial contexts. It is widely used for measuring the area of rooms, homes, yards, and buildings, particularly in countries that use the imperial system or U.S. customary units. Despite the global adoption of the metric system, the square foot remains commonly used in the United States, the United Kingdom, and other regions for real estate, construction, and interior design.

Square Kilometer

The square kilometer (km²) is a unit of area in the metric system, equal to the area of a square with sides that are each 1 kilometer long. One square kilometer is equivalent to 1,000,000 square meters or 100 hectares. It is commonly used to measure large areas, such as the size of cities, countries, and geographical regions.

Origin:

The square kilometer is derived from the kilometer, which is a unit of length in the metric system. The kilometer itself was introduced in the 18th century as part of the metric system, based on the meter, which was originally defined as one ten-millionth of the distance from the North Pole to the equator. The square kilometer, like other area units in the metric system, is based on the square of the unit of length. As the metric system became more widely adopted worldwide, the square kilometer became a standard unit for measuring large areas, particularly in geography, urban planning, and land management.

Convert Square Feet to other area-converter units

1 Square Feet = 0.09290304 Square Meter

1 Square Feet = 9.290303999e-8 Square Kilometer

1 Square Feet = 929.0304 Square Centimeter

1 Square Feet = 92903.04 Square Millimeter

1 Square Feet = 92903039999997600 Square Nanometer

1 Square Feet = 92903040000 Square Micrometer

1 Square Feet = Hectare

1 Square Feet = Acre

1 Square Feet = 3.587006427e-8 Square Mile

1 Square Feet = 0.1111111111 Square Yard

1 Square Feet = 1 Square Feet

1 Square Feet = 144 Square Inch