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Convert Grams To Milligrams

In order to Convert Grams To Milligrams, please, enter grams value in the upper box and get the result in milligrams in the lower box, and vice-versa. The result of the conversion appears immediately.


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This measurement conversion is based on a simple rule: 1 g = 1000 mg

The gram, symbol g, is a unit of mass. Originally defined as "the absolute weight of a volume of pure water equal to the cube of the hundredth part of a metre, and at the temperature of melting ice" (later 4 ℃), a gram is now defined as one one-thousandths of the SI base unit, the kilogram, or 1x10-3 kg, which itself is defined as being equal to the mass of a physical prototype preserved by the International Bureau of Weights and Measures.

One-millionth of a kilogram is 1 mg (one milligram)

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