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

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History/origin: The term "inch" was derived from the Latin unit "uncia" which equated khổng lồ "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 lớn the length of three grains of dry, round barley placed end-to-end. Another version of the inch is also believed to lớn 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, và a large one.

Current use: The inch is mostly used in the United States, Canada, và the United Kingdom. It is also sometimes used in nhật bản (as well as other countries) in relation lớn electronic parts, lượt thích the kích thước of display screens.

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Definition: A centimeter (symbol: cm) is a unit of length in the International System of Units (SI), the current size of the metric system. It is defined as 1/100 meters.

History/origin: A centimeter is based on the mê mệt unit meter, and as the prefix "centi" indicates, is equal lớn one hundredth of a meter. Metric prefixes range from factors of 10-18 khổng lồ 1018 based on a decimal system, with the base (in this case the meter) having no prefix & having a factor of 1. Learning some of the more commonly used metric prefixes, such as kilo-, mega-, giga-, tera-, centi-, milli-, micro-, and nano-, can be helpful for quickly navigating metric units.

Current use: The centimeter, like the meter, is used in all sorts of applications worldwide (in countries that have undergone metrication) in instances where a smaller denomination of the meter is required. Height is commonly measured in centimeters outside of countries lượt thích the United States.

Inch to lớn Centimeter Conversion Table

Inch Centimeter
0.01 in0.0254 cm
0.1 in0.254 cm
1 in2.54 cm
2 in5.08 cm
3 in7.62 cm
5 in12.7 cm
10 in25.4 cm
20 in50.8 cm
50 in127 cm
100 in254 cm
1000 in2540 cm

How to lớn Convert Inch lớn Centimeter

1 in = 2.54 cm1 centimet = 0.3937007874 in