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Length & Distance converter

Millimeters to Inches

Convert millimeters (mm) to inches (in) instantly. Type a value in either box — it works both ways.

mm
in
1 mm = 0.03937 in
Formula
Inches = millimeters × 0.03937
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Millimeters to Inches conversion chart

MillimetersInches
1 mm0.03937 in
2 mm0.07874 in
3 mm0.11811 in
5 mm0.19685 in
10 mm0.393701 in
15 mm0.590551 in
20 mm0.787402 in
25 mm0.984252 in
50 mm1.9685 in
100 mm3.937 in

About millimeters and inches

Both the millimeter and the inch measure length. A millimeter is smaller than a inch, so the numbers change accordingly. Metric units (mm, cm, m, km) are used in most of the world, while inches, feet, yards and miles are standard in the United States.

Related converters

Centimeters to Inchescm → inInches to Centimetersin → cmInches to Millimetersin → mmMeters to Feetm → ftFeet to Metersft → mKilometers to Mileskm → mi

Frequently asked questions

How many inches are in a millimeter?

There are 0.03937 inches in one millimeter (1 mm = 0.03937 in).

How do you convert millimeters to inches?

Multiply the number of millimeters by 0.03937 to get inches. The calculator above does this automatically as you type.

What is 10 mm in in?

10 mm = 0.393701 in. See the full conversion chart above for more common values.