Convert yards to inches

Yard

Definition: A yard (symbol: yd) is a unit of length in both the imperial and US customary systems of measurement. Since 1959, a yard has been defined as exactly 0.9144 meters. It is also equal to 3 feet, or 36 inches.

History/origin: The origin of the yard as a unit is unclear. It is an English unit (predecessor of imperial units) and the term was derived from "gerd" in Old English, the earliest historical form of the English language. Some suggest that the yard could have been derived based on the girth of a person's waist.

Current use: The yard is commonly used in field-length measurement for certain sports such as American and Canadian football, and association football (soccer). The yard is also used in cricket pitch dimensions, and sometimes in golf fairway measurements. In the United Kingdom (UK) as well as the United States, the yard is frequently used when referring to distance. In the UK, it is also a legal requirement that road signs indicating shorter distances are displayed in yards.

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.