What Is a Yard (yd)?
Definition
Yard (yd): A unit of length used in the United States and the United Kingdom, symbol yd. One yard is 3 feet or 36 inches and, since 1959, exactly 0.9144 meters by definition.
The yard (symbol yd) is a unit of length used in the United States and the United Kingdom for fabric, land and sports fields. The 1959 international yard and pound agreement defined the yard as exactly 0.9144 meters, and the inch, foot and mile follow from it. One yard is 3 feet, and 1,760 yards make a mile.
Where it appears in the formulas
1 yd = 3 ft = 36 in = 0.9144 m. The length converter uses this exact factor (NIST SP 811, Appendix B; NIST Handbook 44, Appendix C). For example, 100 meters is about 109.36 yards.