The tonne ( (listen) or ; symbol: t) is a metric unit of mass equal to 1,000 kilograms. It is also referred to as a metric ton. It is equivalent to approximately 2,204.6 pounds; 1.102 short tons (US), and 0.984 long tons (UK). The official SI unit is the megagram (symbol: Mg), a less common way to express the same mass.
