1 Comparison tables of the different systems: Comparison table of ISO TR/11941, North Korean national system (1992), Revised Romanization, McCune-Reischauer, Yale (PDF file from UN Group of Experts on Geographical Names Working Group on Romanization Systems) Comparison table of IPA, Yale, McCune-Reischauer, Lukoff, South Korea Ministry of Education, ...
A tonne (also called metric ton) is a non-SI unit of mass, accepted for use with SI, defined as: 1 tonne = 1000 kg (= 106 g). The kilogram or kilogramme, (symbol: kg) is the SI base unit of mass. A gram is defined as one thousandth of a kilogram.
The metric ton (also known as tonne) equals to 1000 kilograms and used in the metric system. The abbreviation is T. If you are trading internationally, you must know what type of ton as a weight unit is used in that country to avoid the surprises.