The short ton (symbol tn) is a measurement unit equal to 2,000 pounds (907.18 kg). It is commonly used in the United States, where it is known simply as a ton.[1]

A short ton most commonly references its weight, the force exerted by its mass at standard gravity (i.e., short ton-force). One short ton contains 2,000 pound-mass (lb), which corresponds to a weight at one standard gravity of 2,000 pound-force (lbf).

United States

In the United States, a short ton is usually known simply as a "ton",[1] without distinguishing it from the tonne (1,000 kilograms or 2,204.62 pounds), known there as the "metric ton", or the long ton also known as the "imperial ton" (2,240 pounds or 1,016.05 kilograms). There are, however, some U.S. applications where unspecified tons normally mean long tons (for example, naval ships)[2] or metric tons (world grain production figures).

Both the long and short ton are defined as 20 hundredweights, but a hundredweight is 100 pounds (45.36 kg) in the US system (short or net hundredweight) and 112 pounds (50.80 kg) in the imperial system (long or gross hundredweight).[1]

A short ton–force is 2,000 pounds-force (8,896.44 N).

See also

References

  1. ^ a b c "NIST Handbook 44 Specifications: Handbook 44 – 2013 Appendix C – General Tables of Units of Measurement" (PDF). April 26, 2006. p. C-6. Retrieved October 13, 2008. 20 hundredweights = 1 ton
  2. ^ "Naval Architecture for All". United States Bureau of Transportation Statistics. Retrieved October 13, 2008.