The short ton is a mass measurement unit equal to 2,000 pounds (lb) (907.18474 kg). It is commonly used in the United States, where it is known as simply a common ton.
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).
