Updated 2026 · By ToolFern

Millimeter to Inch Converter

Convert millimeters to inches (mm to in) instantly. Type a value and get the answer live, or use the table below. 1 mm = 0.0393701 in.

mm
=
in

How to convert millimeters to inches

To convert millimeters to inches, multiply the number of millimeters by 0.0393701. That is because 1 mm = 0.0393701 in. For example, 10 mm = 0.393701 in.Enter any value in the box above and the answer updates instantly, no sign-up and nothing leaves your browser.

Millimeter to Inch conversion table

Millimeters (mm)Inches (in)
1 mm0.0393701 in
2 mm0.0787402 in
3 mm0.11811 in
5 mm0.19685 in
10 mm0.393701 in
20 mm0.787402 in
25 mm0.984252 in
50 mm1.9685 in
100 mm3.93701 in
1,000 mm39.3701 in

Frequently asked questions

How many inches in a millimeter?

1 mm = 0.0393701 in. So 1 millimeter equals 0.0393701 inches.

What is the mm to in formula?

Millimeters × 0.0393701 = Inches.

Does it work in reverse?

Yes. Use the Inch to Millimeter converter to go the other way.

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