Convert Inch to Millimeter
Inch
The inch (in) is a unit of length in both the imperial system and the U.S. customary system. It is equal to 1/12 of a foot, or approximately 2.54 centimeters. The inch is commonly used for measuring small lengths, such as the dimensions of objects, screen sizes, and body measurements.
The inch has ancient origins and was originally based on the width of a human thumb or the length of a typical barleycorn (a small grain). The term "inch" comes from the Latin word "uncia", meaning "one-twelfth," referencing its relationship to the foot, which was divided into 12 inches in the Roman system. The definition of the inch evolved over time, with various regions and cultures using different standards. In England, the inch was standardized during the 14th century as 1/12 of a foot, and this definition was adopted in other countries using the imperial system. Today, the inch is precisely defined as 2.54 centimeters, in line with the metric system.
Millimeter
The millimeter (mm) is a unit of length in the metric system, equal to one-thousandth of a meter or 0.001 meters. It is commonly used for measuring very small distances or dimensions, such as the thickness of an object or the precision of mechanical components.
The millimeter is derived from the meter, which is the base unit of length in the International System of Units (SI). The term "millimeter" comes from the Latin prefix "milli-", meaning one thousand, and "meter", meaning measure. The millimeter was introduced as part of the metric system in the 18th century during the French Revolution, which sought to standardize measurements worldwide. Today, the millimeter is widely used in scientific, engineering, and everyday contexts, especially when precision is required.
Convert Inch to other length-converter units
1 Inch = 0.0000254 Kilometer
1 Inch = 0.0254 Meter
1 Inch = 2.54 Centimeter
1 Inch = 25.4 Millimeter
1 Inch = 25400 Micrometer
1 Inch = 25400000 Nanometer
1 Inch = 0.0000157828 Mile
1 Inch = 0.0277777778 Yard
1 Inch = 0.0833333333 Feet
1 Inch = 1 Inch
1 Inch = 2.684802117e-18 Light year
1 Inch = 25400 Micron
1 Inch = 0.0000137149 Nautical Mile