How do I convert millimeters to inches?

Divide the number of millimeters by 25.4. For example, 5 mm = 0.19685 in.

How many inches are in one millimeter?

One millimeter equals 0.03937007874 inches.

What is 12 mm in inches?

12 millimeters equals 0.472441 inches.

How do I convert inches back to millimeters?

Use the reverse Inches to Millimeters converter: multiply inches by 25.4.

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Millimeters to Inches Converter

Convert millimeters (mm) to inches (in) instantly — type a value below.

1 millimeter (mm) = 0.03937007874 inches (in)
1 inch (in) = 25.4 millimeters (mm)

From

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How to convert millimeters to inches

To convert millimeters to inches, use this formula:

in = mm ÷ 25.4 (the same as multiplying by 0.03937007874)

Examples

5 mm = 0.19685 in
12 mm = 0.472441 in
100 mm = 3.93701 in

Millimeters to Inches conversion chart

Millimeters (mm)	Inches (in)
0.1 mm	0.00393701 in
0.25 mm	0.00984252 in
0.5 mm	0.019685 in
1 mm	0.0393701 in
2 mm	0.0787402 in
3 mm	0.11811 in
4 mm	0.15748 in
5 mm	0.19685 in
6 mm	0.23622 in
7 mm	0.275591 in
8 mm	0.314961 in
9 mm	0.354331 in
10 mm	0.393701 in
12 mm	0.472441 in
15 mm	0.590551 in
20 mm	0.787402 in
25 mm	0.984252 in
30 mm	1.1811 in
40 mm	1.5748 in
50 mm	1.9685 in
60 mm	2.3622 in
70 mm	2.75591 in
75 mm	2.95276 in
80 mm	3.14961 in
90 mm	3.54331 in
100 mm	3.93701 in
150 mm	5.90551 in
200 mm	7.87402 in
250 mm	9.84252 in
500 mm	19.685 in
1,000 mm	39.3701 in

About the units

Millimeter (mm)

A millimeter is one thousandth of a meter (0.001 m). It is used for small, precise measurements such as rainfall, screen sizes, engineering drawings and tool sizes.

Inch (in)

An inch is exactly 2.54 centimeters, a value fixed by the international yard and pound agreement of 1959. Inches are used in the US and UK for screen sizes, tools, and body and furniture measurements.

Frequently asked questions

How do I convert millimeters to inches?: Divide the number of millimeters by 25.4. For example, 5 mm = 0.19685 in.
How many inches are in one millimeter?: One millimeter equals 0.03937007874 inches.
What is 12 mm in inches?: 12 millimeters equals 0.472441 inches.
How do I convert inches back to millimeters?: Use the reverse Inches to Millimeters converter: multiply inches by 25.4.

Need other units? Use the full length converter.

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