KGS is an acronym for the metric unit of mass called kilograms. Synonyms for KGS include kg, kilogramme, and kilo. The kilogramme is defined as the mass of the international prototype of the kilogramme, which was made of platinum-iridium and is kept at the International Bureau of Weights and Measures. Kilograms are used to measure the mass of objects and are widely used in daily life, science, and industries. Other units of mass that are used along with KGS include grams, tonnes, pounds, and ounces. Therefore, KGS is an important unit of measurement that is used across the world.