## ››Convert millimass unit to gigatonne

 millimass unit gigaton

How many millimass unit in 1 gigaton? The answer is 6.0221366516752E+41.
We assume you are converting between millimass unit and gigatonne.
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millimass unit or gigaton
The SI base unit for mass is the kilogram.
1 kilogram is equal to 6.0221366516752E+29 millimass unit, or 1.0E-12 gigaton.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between millimass unit and gigatonnes.
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## ››Definition: Gigatonne

The SI prefix "giga" represents a factor of 109, or in exponential notation, 1E9.

So 1 gigatonne = 109 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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