Short ton (ton)
Definition: A short ton is a unit of mass used mainly in the United States and is equal to 2,000 pounds, or about 907.18474 kilograms.
History/origin: The short ton developed from the imperial and customary pound-based systems in North America, where it became standard for trade, industry, and transportation.
Current use: Short tons are used in the United States for industrial shipments, construction materials, mining, and freight calculations.


