The milligram is part of the SI system of measurements, it represents 1/1000 of a gram. One gram is the weight of one milliliter of pure water at 4 C.
So the answer is no. The metric system is international, not US.
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The milligram is not part of the US metric system. The metric system used in the US includes units such as grams, kilograms, liters, and meters.
The unit of mass, the kilogram, is a part of both the US customary system and the metric system. In the US customary system, pounds are used for mass measurement, while the metric system uses kilograms.
The US does not use the metric system.
In the US metric system, a kilometer is equivalent to 0.6214 miles.
No
The unit of length, meters, belongs to both the US Customary System and the metric system.