![]() ![]() ![]() It was recognised that additional steps were needed to promote a worldwide measurement system. Some of these systems were metric system variations whilst others were based on the Imperial and American systems. During the history of the metric system a number of variations have evolved and their use spread around the world replacing many traditional measurement systems.īy the end of World War II a number of different systems of measurement were still in use throughout the world. The metric system was officially adopted in France after the French Revolution. the US and UK) have defined many of the modern units in terms of SI units. Those countries that still give recognition to non-SI units (e.g. In the United Kingdom, conversion to metric units is official policy but not yet complete. In the United States the use of SI is increasing but is still limited. With a few exceptions (such as draught beer sales in the United Kingdom) the system is legally being used in every country in the world and many countries do not maintain definitions of other units. It is common for people to describe non-SI units as 'metric', although there is no authority that maintains a current definition of metric system other than SI. ![]() The SI authority describes SI as the modern metric system where modern means post-1960. The SI is not static, it is a living set of standards where units are created and definitions are modified with international agreement. Various new units were created at that time. In 1960, the SI was developed from a subset of the existing Metre-Kilogram-Second systems of units (MKS), rather than the older Centimetre-Gram-Second system (CGS). It is the most common system for everyday commerce in the world, and is almost universally used in the realm of science. The International System of Units (abbreviated SI from the French phrase, Système International d'Unités) is the most widely used system of units. The conversions on this site require the use of JavaScript so please enable before continuing.įor assistance in enabling JavaScript, please contact the webmaster. ![]()
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