How to convert square centimeters to square kilometers
To convert a measurement in square centimeters to square kilometers, multiply the value by 1.000000e-10. The conversion factor comes from the relationship between both units and the square meter.
For example, to convert 5 cm² to square kilometers: 5 × 1.000000e-10 = 5.000000e-10 km².
What is a square centimeter?
A square centimeter is a metric unit of area equal to the area of a square one centimeter on each side, or one ten-thousandth of a square meter. Derived from the centimeter, this unit is convenient for small surfaces. It is widely used in science, medicine, and design for measuring cross-sections and small areas.
Common uses of square centimeters include: Wound and lesion size in medicine; Cross-sectional area in engineering; Material and fabric sample areas; Pressure calculations (force per cm²).
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 Centimeters to square kilometers worked examples
Here are some common values converted:
1 cm² = 1.000000e-10 km² 5 cm² = 5.000000e-10 km² 10 cm² = 0.000000001 km² 50 cm² = 0.000000005 km² 100 cm² = 0.00000001 km²
Frequently asked questions
How many square kilometers are in one square centimeter?
One square centimeter (cm²) equals 1.000000e-10 square kilometers (km²). Multiply any value in square centimeters by 1.000000e-10 to convert to square kilometers.
How do I convert square centimeters to square kilometers?
Multiply the value in square centimeters by 1.000000e-10. For example, 5 cm² × 1.000000e-10 = 5.000000e-10 km².
How do I convert square kilometers to square centimeters?
Multiply the value in square kilometers by 10,000,000,000, or divide by 1.000000e-10. Use the swap button on the converter above to reverse the direction.
Is the square centimeter 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 centimeters to square kilometers?
The formula is: km² = cm² × 1.000000e-10. This comes from the definition of both units relative to the square meter.