1 1 2 inch berapa mm

How many inch in 1 mm? The answer is 0.039370078740157.
We assume you are converting between inch and millimetre.
You can view more details on each measurement unit:
inch or mm
The SI base unit for length is the metre.
1 metre is equal to 39.370078740157 inch, or 1000 mm.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between inches and millimetres.
Type in your own numbers in the form to convert the units!



›› Quick conversion chart of inch to mm

1 inch to mm = 25.4 mm

2 inch to mm = 50.8 mm

3 inch to mm = 76.2 mm

4 inch to mm = 101.6 mm

5 inch to mm = 127 mm

6 inch to mm = 152.4 mm

7 inch to mm = 177.8 mm

8 inch to mm = 203.2 mm

9 inch to mm = 228.6 mm

10 inch to mm = 254 mm



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You can do the reverse unit conversion from mm to inch, or enter any two units below:

›› Common length conversions

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›› Definition: Inch

An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot. The inch is usually the universal unit of measurement in the United States, and is widely used in the United Kingdom, and Canada, despite the introduction of metric to the latter two in the 1960s and 1970s, respectively. The inch is still commonly used informally, although somewhat less, in other Commonwealth nations such as Australia; an example being the long standing tradition of measuring the height of newborn children in inches rather than centimetres. The international inch is defined to be equal to 25.4 millimeters.


›› Definition: Millimeter

A millimetre (American spelling: millimeter, symbol mm) is one thousandth of a metre, which is the International System of Units (SI) base unit of length. The millimetre is part of a metric system. A corresponding unit of area is the square millimetre and a corresponding unit of volume is the cubic millimetre.


›› Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!

Please provide values below to convert inch [in] to millimeter [mm], or vice versa.


Inch

Definition: An inch (symbol: in) is a unit of length in the imperial and US customary systems of measurement. An inch was defined to be equivalent to exactly 25.4 millimeters in 1959. There are 12 inches in a foot and 36 inches in a yard.

History/origin: The term "inch" was derived from the Latin unit "uncia" which equated to "one-twelfth" of a Roman foot.

There have been a number of different standards for the inch in the past, with the current definition being based on the international yard. One of the earliest definitions of the inch was based on barleycorns, where an inch was equal to the length of three grains of dry, round barley placed end-to-end. Another version of the inch is also believed to have been derived from the width of a human thumb, where the length was obtained from averaging the width of three thumbs: a small, a medium, and a large one.

Current use: The inch is mostly used in the United States, Canada, and the United Kingdom. It is also sometimes used in Japan (as well as other countries) in relation to electronic parts, like the size of display screens.

Millimeter

Definition: A millimeter (symbol: mm) is a unit of length in the International System of Units (SI). It is defined in terms of the meter, as 1/1000 of a meter, or the distance traveled by light in 1/299 792 458 000 of a second.

History/origin: The milli- prefix is one of many metric prefixes. It indicates one thousandth of the base unit, in this case the meter. The definition of the meter has changed over time, the current definition being based on the distance traveled by the speed of light in a given amount of time. The relationship between the meter and the millimeter is constant however. Prior to this definition, the meter was based on the length of a prototype meter bar. In 2019, the meter has been re-defined based on the changes made to the definition of a second.

Inch to Millimeter Conversion Table

Inch [in]Millimeter [mm]
0.01 in 0.254 mm
0.1 in 2.54 mm
1 in 25.4 mm
2 in 50.8 mm
3 in 76.2 mm
5 in 127 mm
10 in 254 mm
20 in 508 mm
50 in 1270 mm
100 in 2540 mm
1000 in 25400 mm

How to Convert Inch to Millimeter

1 in = 25.4 mm
1 mm = 0.0393700787 in

Example: convert 15 in to mm:
15 in = 15 × 25.4 mm = 381 mm


Convert Inch to Other Length Units