Short ton

Short ton
The Wire Bridge in New Portland, Maine, United States, with a 3-ton gross weight limit. The short ton is primarily used in the US.
General information
Unit systemUnited States customary units
Unit ofMass
In base units2,000 lb
Conversions
1 short ton in ...... is equal to ...
   SI base units   907.18 kg
   Metric tons   0.90718 t
   Long tons   0.893 long tons

The short ton (abbreviation: tn or st), also known as the US ton, 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; however, the term is ambiguous, the single word "ton" being variously used for short, long, and metric tons.

The various tons are defined as units of mass. They are sometimes used as units of weight, the force exerted by a mass at standard gravity (e.g., short ton-force). One short ton exerts a weight at one standard gravity of 2,000 pound-force (lbf).