| 1 cm² = 0.0000000001 km² |
| 2 cm² = 0.0000000002 km² |
| 3 cm² = 0.0000000003 km² |
| 4 cm² = 0.0000000004 km² |
| 5 cm² = 0.0000000005 km² |
| 6 cm² = 0.0000000006 km² |
| 7 cm² = 0.0000000007 km² |
| 8 cm² = 0.0000000008 km² |
| 9 cm² = 0.0000000009 km² |
| 10 cm² = 0.000000001 km² |
| 15 cm² = 0.0000000015 km² |
| 50 cm² = 0.000000005 km² |
| 100 cm² = 0.00000001 km² |
| 500 cm² = 0.00000005 km² |
| 1000 cm² = 0.0000001 km² |
| 5000 cm² = 0.0000005 km² |
| 10000 cm² = 0.000001 km² |