XinY Units - Convert area units from Square Feet to Square Kilometres
For all your unit conversions. Convert from x to y, from this to that.
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Square Feet
The square foot is an imperial unit and U.S. customary unit of area, used mainly in the United States. It is defined as the area of a square with sides of 1 foot. A standard tennis court is 78 feet x 36 feet, which means it is 2,808 square feet.
Square Kilometres
Square kilometre or square kilometer, symbol km2, is a multiple of the square metre, the SI unit of area or surface area. To give an idea of how many square kilometres is New York, or how many square kilometres is London, or how many square kilometres is Paris, New York is xxx, London is 1,572 square kilometres and Paris is 105.4 square kilometres, and New York is 783.8 square kilometres.