kilogramas

Kilogramas refers to the plural form of kilogram, the base unit of mass in the International System of Units (SI). A kilogram is a fundamental unit of measurement used globally in science, industry, and everyday life. It is one of the seven SI base units, alongside the meter (length), second (time), ampere (electric current), kelvin (thermodynamic temperature), mole (amount of substance), and candela (luminous intensity).

Historically, the kilogram was defined by a physical artifact, the International Prototype of the Kilogram (IPK), a platinum-iridium cylinder. However, as of May 20, 2019, the definition of the kilogram was re-defined based on fundamental physical constants, specifically the Planck constant. This new definition ensures that the kilogram remains stable and universally accessible, independent of any physical object.

One kilogram is approximately equal to the mass of 1,000 cubic centimeters of water at 4 degrees Celsius. It is commonly used to measure the weight of objects, from groceries to vehicles. Other units of mass, such as grams, metric tons, and pounds, are either derived from or compared to the kilogram. The symbol for kilogram is "kg".