| 1 fm = | 0.001 pm |
| 1 fm = | 0.00001 Å |
| 1 fm = | 0.000001 nm |
| 1 fm = | 0.000000001 μm |
| 1 fm = | 0.000000000001 mm |
| 1 fm = | 0.0000000000001 cm |
| 1 fm = | 0.0000000000000394 in |
| 1 fm = | 0.00000000000001 dm |
| 1 fm = | 0.00000000000000328 ft |
| 1 fm = | 0.00000000000000109 yd |
| 1 fm = | 0.000000000000001 m |
| 1 fm = | 0.000000000000000001 km |
| 1 fm = | 0.000000000000000000621 mi |
| 1 fm = | 0.000000000000000000540 n.m. |
| 1 fm = | 0.000000000000000000207 lea |
| 1 fm = | 0.00000000000000000000000000668 AU |
| 1 fm = | 0.000000000000000000000000000000106 ly |
| 1 fm = | 0.0000000000000000000000000000000324 pc |