The history of the metric system began during the Age of Enlightenment with measures of length and weight derived from nature, along with their decimal...

The following outline is provided as an overview of and topical guide to the metric system: Metric system – various loosely related systems of measurement...

The metric system is a decimal-based system of measurement. The current international standard for the metric system is the International System of Units...

According to Schadow and McDonald, metric units, in general, are those units "defined 'in the spirit' of the metric system, that emerged in late 18th century...

(or metrification) is the process of introducing the International System of Units, also known as SI units or the metric system, to replace a jurisdiction's...

the modern form of the metric system and the world's most widely used system of measurement. Coordinated by the International Bureau of Weights and Measures...

Metrication or metrification is the act or process of converting to the metric system of measurement. All over the world, countries have transitioned from...

International System of Units or SI (the modern form of the metric system), the British imperial system, and the United States customary system. In antiquity...

declared the metric system "the preferred system of weights and measures for United States trade and commerce", but permitted the use of United States...

Metrication, the process of introducing the metric system of measurement in place of imperial units, has made steady progress in the United Kingdom since the mid-20th...