1 g equals 1000 mg. In the international system of units, the main unit of mass is kilogram, and the original plan of the international unit is based on the newly promulgated French main unit of mass gram. However, due to the limitation of technology and measurement technology at that time, a standard instrument with the mass of 1 1,000 times of grams was made, that is, 1kg was taken as the standard. Moreover, mg is also an international quality unit, and the English abbreviation is "mg". Usually used to measure the composition of liquids and drugs.

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International weight unit conversion: 1 kg equals 0.00 1 ton; 1 kg is equal to 1 1,000 g; 1 kg is equal to 1 1,000,000 mg; 1 kg equals 1 ,000,000,000 micrograms.

1 kg equals 500g, 1 2 equals 50g, 1 g equals (1/50) 2 equals 0.02 2 2. Since 1 kg is equal to 2kg and 1 kg is equal to 1 000g, 2kg is equal to1000g and1kg is equal to 500g. And because 1 kg equals 10 Liang, 10 Liang equals 500g, 1 Liang equals 50g, 1 g equals (65438