Hundredweight is a unit of weight in the inch-pound system of units customarily used in the United States. People in the United Kingdom also use the hundredweight, though the United Kingdom has officially converted to the metric system. In the United States, a hundredweight equals 100 pounds. This is called a short hundredweight. In the United Kingdom, the hundredweight equals 112 pounds and is known as a long hundredweight. As a unit of mass, the short hundredweight equals 45.4 kilograms, and the long hundredweight equals 50.8 kilograms.
