Although SI is intended for global use, it has not been fully adopted, and some other systems of measurement are still used in parts of the world. Currently, the global standard of measurement is the International System of Units (SI), which is a modern form of the metric system. In human history, various unit systems were developed and used in different regions and cultures.
Other quantities can be expressed as a multiple of the unit. Unit Converters - Full Versions Common ConvertersĪ unit is a measurement of a quantity that is defined or adopted by tradition or law.