| 1 ha = 10000000000 mm² |
| 2 ha = 20000000000 mm² |
| 3 ha = 30000000000 mm² |
| 4 ha = 40000000000 mm² |
| 5 ha = 50000000000 mm² |
| 6 ha = 60000000000 mm² |
| 7 ha = 70000000000 mm² |
| 8 ha = 80000000000 mm² |
| 9 ha = 90000000000 mm² |
| 10 ha = 100000000000 mm² |
| 15 ha = 150000000000 mm² |
| 50 ha = 500000000000 mm² |
| 100 ha = 1000000000000 mm² |
| 500 ha = 5000000000000 mm² |
| 1000 ha = 10000000000000 mm² |
| 5000 ha = 50000000000000 mm² |
| 10000 ha = 100000000000000 mm² |