When using our platform, calculations often involve emission factors expressed in different weight units. These different units are not always well understood and can lead to confusion when analyzing carbon emissions. There are many misconceptions surrounding the metric ton, long ton, short ton, American ton, and British ton. This short article aims to clarify the differences between these units.

The metric ton (symbol t) is a unit of mass used in the metric system. It is equivalent to 1,000 kilograms. To distinguish it from other tons used in the United States or the United Kingdom, it is sometimes referred to as the "metric ton" (tonne, mton). This tonne is associated with the International System of Units (SI).

The short ton is a unit of mass used in the United States. 1 short ton is equal to 2,000 pounds, which is approximately 907 kilograms (0.907 metric ton). It is symbolized as "sh tn" or "US ton," even though it is referred to as a "ton" in the United States.

The long ton is a unit of mass used in the United Kingdom. 1 long ton represents a value of 2,240 pounds, which is approximately 1,016 kilograms (1.016 metric ton). It is symbolized as 'l.t.", "ton" or "UK ton."