AREA CONVERSION
Square centimeter to Square kilometer.
Convert square centimeter (cm²) to square kilometer (km²), with the math explained.
THE MATH, MADE SIMPLE
How to convert square centimeter to square kilometer
Multiply your square centimeter value by 1e-10 to get the equivalent in square kilometer. Both units are normalized through the square meter.
km² = cm² × 1e-1010 cm² = 1e-9 km²
Result rounded to 12 significant digits. Change the precision in the calculator to suit your task.QUICK REFERENCE
cm² to km² conversion table
| Square centimeter (cm²) | Square kilometer (km²) |
|---|---|
| 1 cm² | 1e-10 km² |
| 2 cm² | 2e-10 km² |
| 5 cm² | 5e-10 km² |
| 10 cm² | 1e-9 km² |
| 20 cm² | 2e-9 km² |
| 50 cm² | 5e-9 km² |
| 100 cm² | 1e-8 km² |
| 500 cm² | 5e-8 km² |
| 1,000 cm² | 1e-7 km² |
About the square centimeter
The square centimeter (cm²) is a unit of area. One square centimeter equals 0.0001 square meter (base unit) in this calculator.
All square centimeter conversionsAbout the square kilometer
The square kilometer (km²) is a unit of area. One square kilometer equals 1,000,000 square meter (base unit) in this calculator.
All square kilometer conversionsCommon questions
What is 1 cm² in km²?
One square centimeter equals 1e-10 km². Use the formula above for other values.
Why might another calculator show a different last digit?
Calculators may round at different stages or use different unit conventions. We keep full JavaScript numeric precision during calculation and round only for display. Choose up to 15 significant digits. Check US versus UK units and the notes for this category.
BROWSE BY UNIT