Millimeters to Inches

Convert millimeters (mm) to inches (in). Type in either box; the other updates as you go.

1 millimeter equals0.03937007874 in

1 inch equals25.4 mm

Formulain = mm ÷ 25.4

How to convert millimeters to inches

To convert millimeters to inches, divide the number of millimeters by 25.4.

in = mm ÷ 25.4

Example

Convert 50 millimeters to inches:

50 mm ÷ 25.4 = 1.9685 in

Millimeter to inch conversion chart

Millimeters to inches
Millimeters (mm)	Inches (in)
1 mm	0.03937008 in
2 mm	0.07874016 in
3 mm	0.1181102 in
4 mm	0.1574803 in
5 mm	0.1968504 in
6 mm	0.2362205 in
7 mm	0.2755906 in
8 mm	0.3149606 in
9 mm	0.3543307 in
10 mm	0.3937008 in
12 mm	0.4724409 in
15 mm	0.5905512 in
20 mm	0.7874016 in
25 mm	0.984252 in
30 mm	1.181102 in
40 mm	1.574803 in
50 mm	1.968504 in
60 mm	2.362205 in
70 mm	2.755906 in
75 mm	2.952756 in
80 mm	3.149606 in
90 mm	3.543307 in
100 mm	3.937008 in
150 mm	5.905512 in
200 mm	7.874016 in
250 mm	9.84252 in
500 mm	19.68504 in
1,000 mm	39.37008 in

Going the other way? See the inches to millimeters chart.

Common millimeters to inches conversions

Each value has its own page with the working, the answer in other units and nearby values.

About the units

Millimeter (mm)

A millimeter is one thousandth of a meter. It is the unit on engineering drawings, rainfall gauges and the small marks of a metric ruler.

Inch (in)

An inch is exactly 2.54 centimeters, a value fixed by international agreement in 1959. There are 12 inches in a foot.

Frequently asked questions

How many inches are in a millimeter?

There are 0.03937007874 inches in a millimeter.

How many millimeters are in an inch?

There are 25.4 millimeters in an inch.

How do you convert millimeters to inches?

To convert millimeters to inches, divide the number of millimeters by 25.4.

What is 50 millimeters in inches?

50 millimeters equals 1.9685 inches.

Convert between metric and imperial units of length and distance, from millimeters to miles. Open the length converter to see a value in every unit at once.