| 1 in = | 25400000000000 fm |
| 1 in = | 25400000000 pm |
| 1 in = | 254000000 Å |
| 1 in = | 25400000 nm |
| 1 in = | 25400 μm |
| 1 in = | 25.4 mm |
| 1 in = | 2.54 cm |
| 1 in = | 0.254 dm |
| 1 in = | 0.0833 ft |
| 1 in = | 0.0278 yd |
| 1 in = | 0.0254 m |
| 1 in = | 0.0000254 km |
| 1 in = | 0.0000158 mi |
| 1 in = | 0.0000137 n.m. |
| 1 in = | 0.00000526 lea |
| 1 in = | 0.000000000000170 AU |
| 1 in = | 0.00000000000000000268 ly |
| 1 in = | 0.000000000000000000823 pc |