Short ton


The short ton is a mass measurement unit equal to 2,000 pounds-mass. Its usage is confined to the United States, where it is known as simply a common ton.
ton most commonly references its weight, the force exerted by its mass at standard gravity. One short-ton contains 2,000 pound-mass, which corresponds to a weight at one standard gravity of 2,000 pound-force.

United States

In the United States, a short ton is usually known simply as a "ton", without distinguishing it from the tonne, known there as the "metric ton", or the long ton also known as the "imperial ton". There are, however, some U.S. applications where unspecified tons normally means long tons or metric tons.
Both the long and short ton are defined as 20 hundredweights, but a hundredweight is in the US system and in the imperial system.
A short ton–force is.

United Kingdom

The United Kingdom used to use the imperial ton, long ton in the USA. The use of the imperial or short ton ceased under the Weights and Measures Act 1985. The measure used since then is the tonne and the word "ton", if used, is taken to refer to an imperial or long ton. Most Commonwealth countries followed British practice with the exception of Canada, which continued to use short tons as well as long tons but now predominantly uses metric tons.