How many gigatonne in 1 milligram?
The answer is 1.0E-18.
We assume you are converting between gigatonne and milligram.
You can view more details on each measurement unit: gigatonne or
milligram
The SI base unit for mass is the kilogram.
1 kilogram is equal to 1.0E-12 gigatonne, or 1000000 milligram.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between gigatonnes and milligrams.
Type in your own numbers in the form to convert the units!

››Quick conversion chart of gigatonne to milligram

1 gigatonne to milligram = 1.0E+18 milligram

2 gigatonne to milligram = 2.0E+18 milligram

3 gigatonne to milligram = 3.0E+18 milligram

4 gigatonne to milligram = 4.0E+18 milligram

5 gigatonne to milligram = 5.0E+18 milligram

6 gigatonne to milligram = 6.0E+18 milligram

7 gigatonne to milligram = 7.0E+18 milligram

8 gigatonne to milligram = 8.0E+18 milligram

9 gigatonne to milligram = 9.0E+18 milligram

10 gigatonne to milligram = 1.0E+19 milligram

››Want other units?

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

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).

››Definition: Milligram

The SI prefix "milli" represents a factor of
10^{-3}, or in exponential notation, 1E-3.

So 1 milligram = 10^{-3} grams-force.

››Metric conversions and more

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