## ››Convert keel [coal] to gigatonne

 keel gigatonne

How many keel in 1 gigatonne? The answer is 46424836.208069.
We assume you are converting between keel [coal] and gigatonne.
You can view more details on each measurement unit:
keel or gigatonne
The SI base unit for mass is the kilogram.
1 kilogram is equal to 4.6424836208069E-5 keel, or 1.0E-12 gigatonne.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between keel [coal] 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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