Convert Inch to Millimeter

1 Inch = 25.4 Millimeter

Formula: Multiply the number of inches by 25.4

Steps: 1 in × 25.4 = 25.4 mm

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Other Inch Conversions

Conversion Table

0.1 in 2.54 mm
0.5 in 12.7 mm
1 in 25.4 mm
5 in 127 mm
10 in 254 mm
50 in 1,270 mm
100 in 2,540 mm
500 in 12,700 mm
1,000 in 25,400 mm
Units in Inch Units in Millimeter
1 Kilometer = 39,370.07874 Inch 1 Kilometer = 1,000,000 Millimeter
1 Meter = 39.37007874 Inch 1 Meter = 1,000 Millimeter
1 Centimeter = 0.3937007874 Inch 1 Centimeter = 10 Millimeter
1 Millimeter = 0.03937007874 Inch 1 Millimeter = 1 Millimeter
1 Inch = 1 Inch 1 Inch = 25.4 Millimeter
1 Foot = 12 Inch 1 Foot = 304.8 Millimeter
1 Yard = 36 Inch 1 Yard = 914.4 Millimeter
1 Mile = 63,360 Inch 1 Mile = 1,609,344 Millimeter
1 Nautical Mile = 72,913.38583 Inch 1 Nautical Mile = 1,852,000 Millimeter

On this page you can convert inch (in) to millimeter (mm) quickly and easily. One inch equals 25.4 millimeters, and one millimeter equals 0.03937007874 inches. Type any value in the converter above and the result appears right away.

The inch is a unit of length used mainly in the United States and the United Kingdom. One inch equals exactly 2.54 centimeters, and screens are often measured in inches. Its symbol is in.

The millimeter is a metric unit equal to one thousandth of a meter. It is used for very small lengths, such as screws and paper thickness. Its symbol is mm.

To convert from inch to millimeter, multiply the number of inches by 25.4. For example: 5 in × 25.4 = 127 mm, and 20 in × 25.4 = 508 mm. To go the other way, from millimeter to inch, divide by 25.4 instead.

This length converter is free, works on your phone and computer, and even works offline after your first visit. The tables above give you ready answers for the most common values, and you will also find links to more inch conversions.

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