Convert Grams To Kilograms
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This measurement conversion is based on a simple rule: 1 g = 0.001 kg 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.
The kilogram is the base unit of mass in the International System of Units, which is the modern standard governing the metric system. The kilogram is defined as being equal to the mass of the International Prototype Kilogram (IPK), which is almost exactly equal to the mass of one liter of water.