Omskakelingstabel: fm aan km
| 1 fm = 0.000000000000000001 km |
| 2 fm = 0.000000000000000002 km |
| 3 fm = 0.000000000000000003 km |
| 4 fm = 0.000000000000000004 km |
| 5 fm = 0.000000000000000005 km |
| 6 fm = 0.000000000000000006 km |
| 7 fm = 0.000000000000000007 km |
| 8 fm = 0.000000000000000008 km |
| 9 fm = 0.000000000000000009 km |
| 10 fm = 0.00000000000000001 km |
| 15 fm = 0.000000000000000015 km |
| 50 fm = 0.00000000000000005 km |
| 100 fm = 0.0000000000000001 km |
| 500 fm = 0.0000000000000005 km |
| 1000 fm = 0.000000000000001 km |
| 5000 fm = 0.000000000000005 km |
| 10000 fm = 0.00000000000001 km |