How to convert square feet to square kilometers
To convert a measurement in square feet to square kilometers, multiply the value by 0.000000092903. The conversion factor comes from the relationship between both units and the square meter.
For example, to convert 5 ft² to square kilometers: 5 × 0.000000092903 = 0.000000464515 km².
What is a square foot?
A square foot is an imperial and US customary unit of area equal to the area of a square one foot on each side, about 0.0929 square meters. The square foot is the dominant unit for floor area in US and UK real estate, where home and office sizes are quoted in square feet. It remains the everyday area unit throughout the imperial world.
Common uses of square feet include: Home and office floor area in the US and UK; Real estate listings and rent per square foot; Flooring, tiling, and paint coverage; Retail and commercial space sizing.
What is a square kilometer?
A square kilometer is a metric unit of area equal to the area of a square one kilometer on each side, or 1,000,000 square meters. The square kilometer became the standard unit for large land areas as the metric system spread. It is used for the areas of cities, countries, lakes, and other geographic features worldwide.
Common uses of square kilometers include: Areas of cities, countries, and regions; Land, forest, and agricultural coverage; Lake and reservoir surface area; Population density (people per km²).
Square Feet to square kilometers worked examples
Here are some common values converted:
1 ft² = 0.000000092903 km² 5 ft² = 0.000000464515 km² 10 ft² = 0.00000092903 km² 50 ft² = 0.000004645152 km² 100 ft² = 0.000009290304 km²
Frequently asked questions
How many square kilometers are in one square foot?
One square foot (ft²) equals 0.000000092903 square kilometers (km²). Multiply any value in square feet by 0.000000092903 to convert to square kilometers.
How do I convert square feet to square kilometers?
Multiply the value in square feet by 0.000000092903. For example, 5 ft² × 0.000000092903 = 0.000000464515 km².
How do I convert square kilometers to square feet?
Multiply the value in square kilometers by 10,763,910.4167, or divide by 0.000000092903. Use the swap button on the converter above to reverse the direction.
Is the square foot to square kilometer conversion exact?
Yes. Area conversions derive from the exact 1959 international definitions of the meter, yard, and foot, so the factors are exact.
What is the formula for square feet to square kilometers?
The formula is: km² = ft² × 0.000000092903. This comes from the definition of both units relative to the square meter.