Marks Calc

millimeters to inches

Convert millimeter to inch — instant, free, with the formula shown.

1 mm=0.03937 in

How to convert millimeter to inch

To convert millimeter to inch, multiply by 0.03937008:

in = mm × 0.03937008

For example, 10 mm × 0.03937 = 0.393701 in.

mm to in conversion table

millimeters (mm)inches (in)
1 mm0.03937 in
2 mm0.07874 in
5 mm0.19685 in
10 mm0.393701 in
25 mm0.984252 in
50 mm1.968504 in
100 mm3.937008 in
250 mm9.84252 in
500 mm19.685039 in
1000 mm39.370079 in
Reverse: Inch to Millimeter

Other millimeter conversions

Convert to inch from another unit

mm to in — frequently asked

How many inches are in 1 millimeter?

1 millimeter = 0.03937 inches (mm × 0.03937 = in).

What is the formula to convert millimeter to inch?

Multiply your millimeter value by 0.03937008 to get inch.

How do I convert 10 millimeters to inches?

10 mm = 0.393701 in. For 100 mm the answer is 3.937008 in. Use the calculator on this page for any other value.

When to convert millimeter to inch

1Engineering and construction (mm to feet, meters to inches)
2Running, cycling and athletics (km to miles, miles to yards)
3International shipping and travel (nautical miles, kilometers)
4Manufacturing tolerances (micrometers and nanometers)

Length conversion — common questions

How many feet are in 1 meter?

1 meter equals approximately 3.2808 feet. The exact conversion factor is 1 ft = 0.3048 m.

How do I convert kilometers to miles?

Multiply the kilometer value by 0.621371. For example, 10 km × 0.621371 ≈ 6.2137 miles.

Is 1 yard exactly 3 feet?

Yes. By definition 1 yard = 3 feet = 36 inches = 0.9144 meters.

See all length converters