Square centimetres to Square kilometres
Convert square centimetres to square kilometres (cm² to km²). 1 cm² = 1E-10 km². Use the calculator, formula and conversion table.
How to convert square centimetres to square kilometres
Multiply the amount in square centimetres by 1E-10 to get square kilometres. The displayed factor and results are rounded to 12 significant digits.
km² = cm² × 1E-10Worked example
1 cm² = 1E-10 km². Change the amount in the calculator above to use your own value.
Units and assumptions
Area uses squared length factors: one square foot is exactly 0.09290304 square metres. Acres are international acres; hectares equal 10,000 square metres.
Calculator results use floating-point arithmetic and are rounded for display. The reference table below uses up to 12 significant digits.
Square centimetres to Square kilometres table
| Square centimetres (cm²) | Square kilometres (km²) |
|---|---|
| 0 | 0 |
| 1 | 1E-10 |
| 5 | 5E-10 |
| 10 | 1E-9 |
| 25 | 2.5E-9 |
| 100 | 1E-8 |
| 1,000 | 1E-7 |
About this conversion
What is the formula for square centimetres to square kilometres?
km² = cm² × 1E-10. Multiply the amount in square centimetres by 1E-10 to get square kilometres. The displayed factor and results are rounded to 12 significant digits.
How do I convert back to square centimetres?
Use the square kilometres to square centimetres calculator to reverse this conversion. You can also use Swap units in the calculator above.
Can I use a different pair of units?
Choose another unit in the calculator, or open the area converter to browse all supported pairs.