A tonne (t) or metric ton (U.S.), also referred to as a metric tonne, is a measurement of mass equal to 1,000 kg or 2,204.62262 lb, or approximately the mass of one cubic metre of water. It is not an SI unit but is accepted for use with the SI. If prefixes were used completely consistently, the SI unit for a tonne would be a megagram, or Mg (see SI prefix), but this term is rarely used. The spelling tonne pre-dates the introduction of the SI syst...
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A tonne (t) or metric ton (U.S.), also referred to as a metric tonne, is a measurement of mass equal to 1,000 kg or 2,204.62262 lb, or approximately the mass of one cubic metre of water. It is not an SI unit but is accepted for use with the SI. If prefixes were used completely consistently, the SI unit for a tonne would be a megagram, or Mg (see SI prefix), but this term is rarely used. The spelling tonne pre-dates the introduction of the SI system in 1960 (it has been used with this meaning in France since 1842), and is now used as the standard spelling for the metric mass measurement in most English-speaking countries. In the U.S., the units were originally referred to using the French words millier or tonneau, but these terms are now obsolete. The Imperial and US customary units comparable to the tonne are both spelled ton in English.
Multipliers are never used to denote fractions of a tonne. Hence a mass of 10,000 g would normally be referred to as 10 kilograms (kg), and not 10...
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