How many megatonne in 1 gigatonne?
The answer is 1000.
We assume you are converting between megatonne and gigatonne.
You can view more details on each measurement unit: megatonne or
gigatonne
The SI base unit for mass is the kilogram.
1 kilogram is equal to 1.0E-9 megatonne, 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 megatonnes and gigatonnes.
Type in your own numbers in the form to convert the units!

››Quick conversion chart of megatonne to gigatonne

1 megatonne to gigatonne = 0.001 gigatonne

10 megatonne to gigatonne = 0.01 gigatonne

50 megatonne to gigatonne = 0.05 gigatonne

100 megatonne to gigatonne = 0.1 gigatonne

200 megatonne to gigatonne = 0.2 gigatonne

500 megatonne to gigatonne = 0.5 gigatonne

1000 megatonne to gigatonne = 1 gigatonne

››Want other units?

You can do the reverse unit conversion from
gigatonne to megatonne, or enter any two units below:

The SI prefix "mega" represents a factor of
10^{6}, or in exponential notation, 1E6.

So 1 megatonne = 10^{6} 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 (= 10^{6} g).

››Definition: Gigatonne

The SI prefix "giga" represents a factor of
10^{9}, or in exponential notation, 1E9.

So 1 gigatonne = 10^{9} 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 (= 10^{6} g).

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