Convert UnitsQuick conversion table
| inch | millimeter |
|---|---|
| 1 in | 25.4 mm |
| 2 in | 50.8 mm |
| 5 in | 127 mm |
| 10 in | 254 mm |
| 20 in | 508 mm |
| 25 in | 635 mm |
| 50 in | 1270 mm |
| 100 in | 2540 mm |
Unit definitions
inch (in)
inch is a unit of Length. In this converter it is defined against the category base unit as 1 in = 0.0254 m.
millimeter (mm)
millimeter is a unit of Length. In this converter it is defined against the category base unit as 1 mm = 0.001 m.
Example
10 in = 254 mm
Sources and methodology
Definitions: BIPM SI Brochure and NIST conversion guidance. Methodology.