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Millimeter Converters

Convert millimeters to centimeters, meters, inches, feet, yards and micrometers.

What this tool does

Convert millimeters to centimeters, meters, inches, feet, yards and micrometers. Type an amount in millimeters, choose the units, and the tool converts it to inches. It offers 7 length units and also shows the same amount in the others.

Inputs

  • Value: A number.
  • From: Choose one: Millimeter, Centimeter, Meter, Inch, Foot, Yard, Micrometer. Starts as Millimeter.
  • To: Choose one of the same 7 units as "From". Starts as Inch.

How to use

  1. Enter the amount you want to convert.
  2. Choose the unit to convert from and the unit to convert to.
  3. Read the result: the converted amount and the same amount in the other units. It appears once every required field has a valid value.

Worked examples

Conversions from millimeters to inches:

  • 1 mm ≈ 0.0393701 in
  • 5 mm ≈ 0.19685 in
  • 10 mm ≈ 0.393701 in
  • 50 mm ≈ 1.968504 in
  • 100 mm ≈ 3.937008 in

Multiply the number of millimeters by about 0.0393701 to get inches. The factor follows from exact definitions. It has more digits than fit here, so it is shown rounded.

Sources: Millimeter: SI Brochure, 9th edition (2019, updated 2022), Table 7 (SI prefixes). Inch: International yard and pound agreement, 1959.

Limitations

  • Converts the unit of a length only. It does not work out a length from other measurements.
  • Uses international inches, feet and yards, which are defined exactly in metric units.

FAQs

Q: How many inches are in one millimeter?
A: One millimeter is about 0.0393701 in. Enter any value and the converter scales it for you.
Q: How do I convert inches to millimeters?
A: Choose inch in the From box and millimeter in the To box. One inch is 25.4 mm.

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