Foot (unit)
Road signs with height restrictions in the United States and the United Kingdom are in feet and inches. They are less commonly seen in Canada and Ireland. In the U.S. and the UK, people usually measure a person's height in feet and inches. If a person is "five foot eleven", this means that person is 5 feet and 11 inches, or about 180 centimeters. The height is written 5′ 11″