The tonne (/tĘŚn/ ( listen); non-SI unit, symbol: t), commonly referred to as the metric ton in the United States and Canada, is a non-SI metric unit of mass equal to 1,000 kilograms or one megagram (symbol: Mg). It is equivalent to approximately 2,204.6 pounds, 1.102 short tons (US) or 0.984 long tons (UK).