WITHERS HEIGHT The height at the withers of a horse used to be expressed in (one hand = 4 inches) or in “feet” (one foot = 12 inches), and in inches. Since one inch = 25,4 millimeters, a horse 21 hands high or “7 feet high” stands 213, 4 cm at the withers. According to Willoughby (1974) the largest draft horses may reach this height. When live animals cannot be measured, the height at the withers is estimated by multiplying the length of one of the limb bones by an adequate (...)