| Femtometer | Furlong |
| 1 fermi | 4.9709695378987E-18 furlong |
| 2 fermi | 9.9419390757973E-18 furlong |
| 3 fermi | 1.4912908613696E-17 furlong |
| 4 fermi | 1.9883878151595E-17 furlong |
| 5 fermi | 2.4854847689493E-17 furlong |
| 6 fermi | 2.9825817227392E-17 furlong |
| 7 fermi | 3.4796786765291E-17 furlong |
| 8 fermi | 3.9767756303189E-17 furlong |
| 9 fermi | 4.4738725841088E-17 furlong |
| 10 fermi | 4.9709695378987E-17 furlong |
| 11 fermi | 5.4680664916885E-17 furlong |
| 12 fermi | 5.9651634454784E-17 furlong |
| 13 fermi | 6.4622603992683E-17 furlong |
| 14 fermi | 6.9593573530581E-17 furlong |
| 15 fermi | 7.456454306848E-17 furlong |
| 16 fermi | 7.9535512606379E-17 furlong |
| 17 fermi | 8.4506482144277E-17 furlong |
| 18 fermi | 8.9477451682176E-17 furlong |
| 19 fermi | 9.4448421220075E-17 furlong |
| 20 fermi | 9.9419390757973E-17 furlong |