A U.S. ton, which is generally called a short ton or simply, a ton, is equivalent to approximately 907 kilograms. A metric ton is equivalent to 1,000 kilograms.
The short ton is based on the English measurement system and is equivalent to 2,000 pounds. Each pound is approximately 0.45 kilograms, thus the short ton is equivalent to 907 kilograms. The metric ton, also called the tonne, is based on the metric measurement system. A metric ton is equivalent to 1 megagram, or 1 million grams. Another type of ton is the long ton or U.K. ton, which is equivalent to 1,016 kilograms.