About converting Inch to Millimeter
This page converts Inch (in) to Millimeter (mm). Enter a value above to get an immediate result with the target unit clearly shown.
Inch to Millimeter formula
To convert from Inch to Millimeter, multiply the starting value by 25.4. This factor expresses how one Inch relates to the selected Millimeter unit.
Conversion example: 100 in × 25.4 = 2540 mm. Therefore, 100 Inch equals 2540 Millimeter.
This Inch to Millimeter conversion compares two units used to express distance, dimensions, and travel measurements. Use Inch (in) as the source unit when your original value is recorded in that unit; the calculated result is then presented in Millimeter (mm).