| Femtometer | Fathom |
| 1 fermi | 5.4680664916885E-16 fathom |
| 2 fermi | 1.0936132983377E-15 fathom |
| 3 fermi | 1.6404199475066E-15 fathom |
| 4 fermi | 2.1872265966754E-15 fathom |
| 5 fermi | 2.7340332458443E-15 fathom |
| 6 fermi | 3.2808398950131E-15 fathom |
| 7 fermi | 3.827646544182E-15 fathom |
| 8 fermi | 4.3744531933508E-15 fathom |
| 9 fermi | 4.9212598425197E-15 fathom |
| 10 fermi | 5.4680664916885E-15 fathom |
| 11 fermi | 6.0148731408574E-15 fathom |
| 12 fermi | 6.5616797900262E-15 fathom |
| 13 fermi | 7.1084864391951E-15 fathom |
| 14 fermi | 7.655293088364E-15 fathom |
| 15 fermi | 8.2020997375328E-15 fathom |
| 16 fermi | 8.7489063867017E-15 fathom |
| 17 fermi | 9.2957130358705E-15 fathom |
| 18 fermi | 9.8425196850394E-15 fathom |
| 19 fermi | 1.0389326334208E-14 fathom |
| 20 fermi | 1.0936132983377E-14 fathom |