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Example How Many Millimeters in an Inch

Units of Measure / How Many Millimeters in an Inch

In 1959, the British Commonwealth and the USA gave the definition to the international yard, which is equal to 0.9144 meters. One yard has 36 inches, so the length of the international inch is 25.4 millimeters. If you convert inches to millimeters, you have to multiply the number of inches by 25.4. For converting to inches, divide the millimeters by 25.4. Use a calculator, if necessary.

Millimeters

Inches

One centimeter

10

0.3937

One inch

25.4

1

One foot

304.8

12

One yard

914.4

36

One meter

1000

39.37

Inches and Millimeters

Here are some facts about millimeters and inches that may be useful to you.

The inch is mostly used in the USA, where it is one of the official units of length. Canada, Australia, the United Kingdom and some other countries have accepted the metric system, but their citizens still measure length in inches informally. It is well-known that inches are widely used for measuring diagonals of 2-dimentional displays.

The following video will show you how to measure length with a regular metric ruler:

- The millimeter (British English: millimetre; abbr. mm) is a metric length unit, which is equal to 1/10 centimeter and 1000 micrometers. One international inch has 25.4 millimeters.
- The inch (abbr. in, symbol ”) is a non-metric length unit in various systems. There are 25.4 millimeters in one international inch.
- The International System of Units (abbr. ISU, SI) is a modern system of measurement units, which is most widely used in the world. In consists of seven basic units: meters, kilograms, ampere, second, kelvin, mole, and candela).

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