Error: We couldn't find a conversion between megatonne and on��a [Portuguese]
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The SI prefix "mega" represents a factor of 106, or in exponential notation, 1E6.
So 1 megatonne = 106 tonnes.
The definition of a tonne is as follows:
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).
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