Ton

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A ton is a unit of weight or mass. There are three primary varieties of ton:

  • The common ton or short ton, defined as 2 000 pounds avoirdupois (907 kg)
  • The long ton, defined as 2 240 pounds (1 016 kg)
  • The tonne, called a metric ton in the United States, is defined as 1 000 kilograms (2 204 pounds). This unit is also called a "megagram" (1 000 000 g) but "tonne" is more convenient.