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megagram milligram |

How many g in 1 mg?
The answer is 0.001.

We assume you are converting between **gram** and **milligram**.

You can view more details on each measurement unit:

g or
mg

The SI base unit for **mass** is the kilogram.

1 kilogram is equal to 1000 g, or 1000000 mg.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between grams and milligrams.

Type in your own numbers in the form to convert the units!

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

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

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

**ConvertUnits.com** provides an online
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