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Convert millimeters to inches

Convert millimeters (mm) to inches (in). 1 mm = 0.0393701 in, and 1 in = 25.4 mm.

1 mm = 0.0393701 in

MM to Inches formula

in = mm ÷ 25.4

Divide the number of millimeters by 25.4.

Example: To convert 1 mm to inches: 1 ÷ 25.4 = 0.0393701 in.

Quick answers

What is 1 mm in inches?
1 mm = 0.0393701 in
What is 10 mm in inches?
10 mm = 0.393701 in
What is 25 mm in inches?
25 mm = 0.984252 in
What is 100 mm in inches?
100 mm = 3.93701 in

MM to Inches conversion table

Inches to MM table
millimeters (mm)inches (in)Feet and inches
1 mm0.0393701 in
2 mm0.0787402 in
3 mm0.11811 in
4 mm0.15748 in
5 mm0.19685 in
6 mm0.23622 in
8 mm0.314961 in
10 mm0.393701 in
12 mm0.472441 in
15 mm0.590551 in
20 mm0.787402 in
25 mm0.984252 in
30 mm1.1811 in
40 mm1.5748 in
50 mm1.9685 in
75 mm2.95276 in
100 mm3.93701 in
150 mm5.90551 in
200 mm7.87402 in
250 mm9.84252 in
300 mm11.811 in
500 mm19.685 in1 ft 7.7 in
1,000 mm39.3701 in3 ft 3.4 in

Frequently asked questions

How many millimeters are in an inch?

There are 25.4 millimeters in an inch (1 in = 25.4 mm), so 1 mm = 0.0393701 in.

How do I convert millimeters to inches?

Divide the number of millimeters by 25.4. To convert 1 mm to inches: 1 ÷ 25.4 = 0.0393701 in.

Is the MM to Inches conversion exact?

Yes. Both units are defined exactly, so 1 millimeter is exactly 0.0393700787402 inches. Results on this page are rounded to six significant digits; pick more decimals in the converter if you need them.

What is 1 mm in inches?

1 mm = 0.0393701 in.

How do I convert inches back to millimeters?

Use the reverse relationship: 1 in = 25.4 mm. The Inches to MM page has a converter and a full table.

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