A yard stick is 36 inches in length. Twelve inches are in a foot, and 3 feet are in a yard. One yard is equal to 0.9144 meter, which is the unit used in the metric system.
Inches, feet and yards are units of length in the United States Customary System of measurement, which is also called the United States Standard System. The United States' official system of measurement is based on the British Imperial System, which has roots in the Middle Ages. Great Britain stopped using measurements of yards, feet and inches in 1965 when it converted to the metric system.