## Convert gram to gigatonne

 grams gigatonne

How many grams in 1 gigatonne? The answer is 1.0E+15. We assume you are converting between gram and gigatonne. You can view more details on each measurement unit: grams or gigatonne The SI base unit for mass is the kilogram. 1 kilogram is equal to 1000 grams, 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 grams and gigatonnes. Type in your own numbers in the form to convert the units!

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## Definition: Gram

a metric unit of weight equal to one thousandth of a kilogram

## 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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