How many square kilometers are in 1 square centimeter?

1 square centimeter equals 1e-10 km².

How do I convert square kilometers back to square centimeters?

Use the reverse converter: 1 square kilometer equals 10000000000 cm².

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

To convert square centimeters to square kilometers, multiply the value by 1e-10.

km² = cm² × 1e-10

40 cm² × 1e-10 = 4e-9 km²

Square Centimeter (cm²): Used for small surfaces, skin and material areas. One ten-thousandth of a square metre.
Square Kilometer (km²): Used for the area of countries, cities and lakes. Equal to one million square metres.

How do I convert square centimeters to square kilometers?: To convert square centimeters to square kilometers, multiply the value by 1e-10.
How many square kilometers are in 1 square centimeter?: 1 square centimeter equals 1e-10 km².
How many square kilometers are in 10 square centimeters?: 10 cm² equals 1e-9 km².
How do I convert square kilometers back to square centimeters?: Use the reverse converter: 1 square kilometer equals 10000000000 cm².
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.