Convert inch to mm

Distance (in inches):
Distance (in millimeters):

The calculator allows you to convert inches to mm.

Perform the reverse calculation: convert millimeters to inches

1 inch = 25.4 mm
1 mm = 1 / 25.4 inch or approximately 0.03937 inch

To convert inches to millimeters, multiply by 25.4.

Example

We are going to convert a distance d of 8 inches to millimeters.
Distance d = 8 inches
1 inch = 25.4 mm
d = 8 inches = 8 x 25.4 = 203.2 mm

Inch

The inch is a unit of length.
The symbol for inch is the double prime: ". "5 inches" is written 5".
The correct use of the double prime is to indicate the unit of measure inches: 5” (five inches)
Another symbol for the unit of measurement "inch" is "in".
The plural of "inch" is "inches".

Convert inches to mm :

1" = 25.4 mm
10" = 254 mm
20" = 508 mm
30" = 762 mm
40" = 1016 mm
50" = 1270 mm
60" = 1524 mm
70" = 1778 mm
80" = 2032 mm
90" = 2286 mm
100" = 2540 mm

A inch is a unit of measure equal to one twelfth (1/12th) of a foot (2.54 cm).

The inch is used to measure for example:
- wheel sizes and vehicle tire sizes
- the dimensions of screens
- the sizes of electronic components,
- the resolution of printers and scanners expressed in dots per inch (dots per inch = DPI)

Millimeter or millimetre

You say "millimeter" in American English and "millimetre" in British English.
mm is the written abbreviation for millimeter or millimeters. A millimeter is a small unit of length in the metric system. It is a metric unit of length that is equal to a tenth of a centimeter. There are 1000 millimeters in 1 meter.

It is the same spelling rule for other units, like centimeter and centimetre, meter and metre or kilometer and kilometre.

Unit of length

The standard unit for measurement of length is meter. Length is usually a measured dimension of distance between two points or an object. Its SI unit (International System of Units) is meter (symbol: m). The common imperial units of length are miles (mi), inches (in), yards (yd) and feet (ft). What is a distance? Distance measures length.

Convert units:
1 meter = 10 decimeters
1 meter = 100 centimeters
1 meter = 1000 millimeters
1 millimeter = 0.1 centimeter = 1/10 centimeter
1 millimeter = 0.01 decimeter = 1/100 decimeter
1 millimeter = 0.001 meter = 1/1000 meter