Home › Length › Millimeter to Inch

Millimeter to Inch Converter

For engineering drawings, fasteners and 3D-printing parts that mix metric and imperial.

—
1 Millimeter (mm) = 0.03937007874 Inch (in). The reverse: 1 Inch = 25.4 Millimeter.

How to convert millimeters to inchs

Formula: Multiply the value in millimeters by 0.03937007874.
Reference: 1 Millimeter (mm) = 0.03937007874 Inch (in). The reverse: 1 Inch = 25.4 Millimeter.
Worked example: 25.4 mm is exactly 1 inch by definition.

Millimeter to Inch conversion table

Millimeter (mm)Inch (in)
1 mm=0.03937007874 in
2 mm=0.07874015748 in
3 mm=0.1181102362 in
4 mm=0.157480315 in
5 mm=0.1968503937 in
6 mm=0.2362204724 in
8 mm=0.3149606299 in
10 mm=0.3937007874 in
12 mm=0.4724409449 in
15 mm=0.5905511811 in
20 mm=0.7874015748 in
25 mm=0.9842519685 in
50 mm=1.968503937 in
100 mm=3.937007874 in
127 mm=5 in
254 mm=10 in

Related conversions

Centimeter to Inch Inch to Centimeter Centimeter to Foot Foot to Centimeter Meter to Foot Kilometer to Mile

Frequently asked questions

How many inchs is 25.4 millimeters?

25.4 mm is exactly 1 inch by definition.

How do I convert millimeters to inchs?

Multiply the value in millimeters by 0.03937007874. 1 Millimeter (mm) = 0.03937007874 Inch (in). The reverse: 1 Inch = 25.4 Millimeter.

Is this converter free?

Yes — ConvWiz is free, needs no account, and runs entirely in your browser.