Millimeters to Inches Converter

Millimeters are used in engineering and manufacturing while inches remain common in the US. One millimeter equals exactly 1/25.4 inches.

Formula

in = mm × 0.03937007874Convert Millimeters (mm) to Inches (in).
Example: 1 mm = 0.03937007874 in

Common Values

MillimeterInch
1 mm0.03937007874 in
2 mm0.07874015748 in
3 mm0.1181102362 in
5 mm0.1968503937 in
6 mm0.2362204724 in
8 mm0.3149606299 in
10 mm0.3937007874 in
12 mm0.4724409449 in
15 mm0.5905511811 in
20 mm0.7874015748 in
25 mm0.9842519685 in
50 mm1.968503937 in

Unit Definitions

Millimeter
Symbol: mm

The Millimeter (mm) is a unit of length.

Inch
Symbol: in

The Inch (in) is a unit of length.

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