25.4 mm = 1 in
| Unit | Symbol | Value |
|---|---|---|
| Micrometer | µm | 25 400 |
| Millimeter | mm | 25.4 |
| Centimeter | cm | 2.54 |
| Meter | m | 0.0254 |
| Kilometer | km | 2.54 × 10⁻⁵ |
| Thou (mil) | thou | 1 000 |
| Inch | in | 1 |
| Foot | ft | 0.08333333 |
| Yard | yd | 0.02777778 |
| Mile | mi | 1.57828 × 10⁻⁵ |
| Nautical mile | nmi | 1.37149 × 10⁻⁵ |