Short ton

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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).

Read on Wikipedia · Image Doug Kerr from Albany, NY, United States, CC BY-SA 2.0