How to convert square meters to square kilometers
To convert a measurement in square meters to square kilometers, multiply the value by 0.000001. The conversion factor comes from the relationship between both units and the square meter.
For example, to convert 5 m² to square kilometers: 5 × 0.000001 = 0.000005 km².
What is a square meter?
A square meter is the SI derived unit of area, equal to the area of a square one meter on each side, about 10.764 square feet. The square meter follows directly from the meter, the SI base unit of length. It is the standard unit for floor area and land measurement across most of the world, often written 'sqm' in real estate.
Common uses of square meters include: Floor area and room size in real estate; Flooring, tiling, and carpet ordering; Land plot size in metric countries; Solar panel and roofing coverage.
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 Meters to square kilometers worked examples
Here are some common values converted:
1 m² = 0.000001 km² 5 m² = 0.000005 km² 10 m² = 0.00001 km² 50 m² = 0.00005 km² 100 m² = 0.0001 km²
Frequently asked questions
How many square kilometers are in one square meter?
One square meter (m²) equals 0.000001 square kilometers (km²). Multiply any value in square meters by 0.000001 to convert to square kilometers.
How do I convert square meters to square kilometers?
Multiply the value in square meters by 0.000001. For example, 5 m² × 0.000001 = 0.000005 km².
How do I convert square kilometers to square meters?
Multiply the value in square kilometers by 1,000,000, or divide by 0.000001. Use the swap button on the converter above to reverse the direction.
Is the square meter 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 meters to square kilometers?
The formula is: km² = m² × 0.000001. This comes from the definition of both units relative to the square meter.