Kilogram
Kilogram is the basic unit of mass in the International System of Units. Kilograms are defined equal to the mass of the International Kilogram Prototype, which is almost equal to the mass of one liter of water. The name is the only SI base unit with an SI prefix. It is also the only SI unit based on a man-made object, rather than a basic physical feature that can be measured in different laboratories. It was first described as a mass of pure water in 1889 kg before being accepted as a stable etalon mass, and 1 dm³ at +4 ° C. That same year, the etalon of 39 mm in diameter and 39 mm in height, made of iridium and platinum in the International Weight and Metrology Bureau of Paris, France's capital city, was considered equal to the cistern mass. ▪ 1 kilogram = 1,000 grams ▪ 1 kilogram = 1,000,000 milligrams ▪ 1 kilogram = 1,000,000,000 micrograms ▪ 1 kilogram = 1,000,000,000,000 nanograms ▪ 1 kilogram = 1,000,000,000,000,000 picograms ▪ 1 kilogram = 1,000,000,000. 000.000.000 Femtograms ▪ 1 Kilogram = 1.000.000.000.000.000.000.000 Attogram ▪ 1 Kilogram = 1.000.000.000.000.000.000.