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A metric ton is a unit of measurement based on the metric system, rather than the standard, or imperial, system more commonly used in the United States. It is known as a tonne in most other countries, and is equivalent to 1,000 kilograms. Strictly speaking, it is a megagram, being one million grams.
Difference Between Ton and Metric Ton. Ton and metric ton are weight measure units. However, there is a difference. Metric ton is equal to 1000 kilograms and is SI unit. Hence, it is a megagram as it contains 1 million grams. The term ton is comes from Latin word tunna which means cask and in the past a cask filled with things usually weighed almost a metric ton.