How many gigatonne in 1 million tonnes? The answer is 0.001. We assume you are converting between gigatonne and million metric tonne. You can view more details on each measurement unit: gigatonne or million tonnes The SI base unit for mass is the kilogram. 1 kilogram is equal to 1.0E-12 gigatonne, or 1.0E-9 million tonnes. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between gigatonnes and million tonnes. Type in your own numbers in the form to convert the units!
1 gigatonne to million tonnes = 1000 million tonnes
2 gigatonne to million tonnes = 2000 million tonnes
3 gigatonne to million tonnes = 3000 million tonnes
4 gigatonne to million tonnes = 4000 million tonnes
5 gigatonne to million tonnes = 5000 million tonnes
6 gigatonne to million tonnes = 6000 million tonnes
7 gigatonne to million tonnes = 7000 million tonnes
8 gigatonne to million tonnes = 8000 million tonnes
9 gigatonne to million tonnes = 9000 million tonnes
10 gigatonne to million tonnes = 10000 million tonnes
You can do the reverse unit conversion from million tonnes to gigatonne, or enter any two units below:
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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