Gram (g)
Definition: A gram (symbol: g) is one thousandth of a kilogram (1 g = 0.001 kg). It is a unit of mass in the SI metric system and the most practical unit for measuring small quantities.
History/origin: The gram was originally defined in 1795 as the mass of one cubic centimeter of water at 4 °C, the same basis as the early kilogram definition, just scaled down by a factor of 1,000.
Current use: Grams are widely used in food nutrition labels, cooking recipes, pharmaceutical doses, and jewellery. Most food packaging worldwide lists weight in grams or kilograms.
