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1 kilometer (km) = 1.0E+18 femtometers (fm). To convert km to fm, multiply the length value by the conversion factor 1.0E+18.
Number of kilometers × 1.0E+18 = Value in femtometers
1 km = 1 × 1.0E+18 = 1.0e+18 fm
| Kilometers [km] | Femtometers [fm] |
| 1 | 1.0E+18 |
| 2 | 2.0E+18 |
| 3 | 3.0E+18 |
| 4 | 4.0E+18 |
| 5 | 5.0E+18 |
| 6 | 6.0E+18 |
| 7 | 7.0E+18 |
| 8 | 8.0E+18 |
| 9 | 9.0E+18 |
| 10 | 1.0E+19 |
| 11 | 1.1E+19 |
| 12 | 1.2E+19 |
| 13 | 1.3E+19 |
| 14 | 1.4E+19 |
| 15 | 1.5E+19 |
| 16 | 1.6E+19 |
| 17 | 1.7E+19 |
| 18 | 1.8E+19 |
| 19 | 1.9E+19 |
| 20 | 2.0E+19 |
How many femtometers are there in a kilometer?
There are 1.0E+18 femtometers in a kilometer.
Which is the bigger unit?
Kilometer is the bigger unit than femtometer.
