Inches is a measure from the imperial system used in the USA, Great Britain and some other countries. Millimeters are one tenth of a centimeter from the metric system. To convert from one value to another, you can remember that one inch contains 25.4 millimeters. Or, you can skip remembering it and use our quick and handy online inches to mm calculator. It is also possible to add it to your browser bookmarks to always have it at hand.

Inches to millimeters converter

Enter the value in inches and click the Calculate button to convert to millimeters. Below you can do the opposite. Rounding to four decimal places

 

Inch to millimeter ratio on the measuring tool

Here you can see the ratio of inch to millimeter on the measuring tool.

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