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MM to Inches Converter

Convert MM to Inches instantly: 1 millimeter = 0.03937007874 inches. Free mm to inches converter with formula, chart and examples.

1 millimeter = 0.03937007874 inches

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How to Convert MM to Inches

The formula is inches = millimeters × 0.03937007874. 1 millimeter = 0.03937007874 inches. Type any value in the converter above for an instant answer, or use the chart below for the most common values.

This page is preset for millimeter to inch conversions, but you can switch either list to any of the 92 units in the Length Converter, or go the other way with the Inches to MM converter.

MM to Inches conversion chart

MMInches
0.1 mm0.0039370079 in
0.25 mm0.0098425197 in
0.5 mm0.019685039 in
1 mm0.039370079 in
2 mm0.078740157 in
3 mm0.11811024 in
4 mm0.15748031 in
5 mm0.19685039 in
6 mm0.23622047 in
7 mm0.27559055 in
8 mm0.31496063 in
9 mm0.35433071 in
10 mm0.39370079 in
11 mm0.43307087 in
12 mm0.47244094 in
13 mm0.51181102 in
14 mm0.5511811 in
15 mm0.59055118 in
16 mm0.62992126 in
17 mm0.66929134 in
18 mm0.70866142 in
19 mm0.7480315 in
20 mm0.78740157 in
25 mm0.98425197 in
30 mm1.1811024 in
40 mm1.5748031 in
50 mm1.9685039 in
60 mm2.3622047 in
70 mm2.7559055 in
75 mm2.9527559 in
80 mm3.1496063 in
90 mm3.5433071 in
100 mm3.9370079 in
150 mm5.9055118 in
200 mm7.8740157 in
250 mm9.8425197 in
500 mm19.685039 in
1,000 mm39.370079 in

Common MM to Inches conversions

  • 1 millimeter = 0.03937007874 inches

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How to Use the MM to Inches Converter

  1. Type a value in the From box and choose its unit.
  2. Pick the unit you want in the To list — the result updates as you type.
  3. Use the swap button to reverse the conversion, or type in the To box to convert backwards.
  4. Check the All conversions table to see your value in every unit; click a row to make it the target.

Frequently Asked Questions

How many inches are in a millimeter?

There are 0.03937007874 inches in 1 millimeter. Going the other way, 1 inch = 25.4 millimeters.

How do I convert MM to Inches?

Use the formula inches = millimeters × 0.03937007874. For example, 1 millimeter = 0.03937007874 inches. Or type the value in the converter above and the answer appears as you type.

What is the MM to Inches formula?

inches = millimeters × 0.03937007874 — the conversion factor is exact to the digits shown, using the international definitions of both units.

What is 2 millimeters in inches?

2 millimeters = 0.078740157 inches.

What is 5 millimeters in inches?

5 millimeters = 0.19685039 inches.

What is 10 millimeters in inches?

10 millimeters = 0.39370079 inches.

What is 25 millimeters in inches?

25 millimeters = 0.98425197 inches.

What is 100 millimeters in inches?

100 millimeters = 3.9370079 inches.

How do I convert Inches back to MM?

Use the swap button in the converter above, or open our Inches to MM converter. millimeters = inches × 25.4.

Is this MM to Inches converter accurate?

Yes. It uses exact unit definitions and double-precision maths, and you can show up to 15 significant digits. The table below is calculated with the same formula.

Can I convert MM to other length units?

Yes — pick any unit in the From and To lists above, or open the full Length Converter, which handles 92 length units.

Is the MM to Inches converter free?

Yes, it is free with no sign-up, and every conversion runs in your browser so nothing is sent to a server.