Provides a summary of most of the units of measurement to be found in use around the world today (and a few of historical interest), together with the appropriate conversion factors needed to change them into a 'standard' unit of the International System (S.I.).
Includes the units of the International System of Units (SI); many other units of the metric system; various non-metric scientific units; units of the English traditional systems; selected traditional units from cultures other than English; and certain measurement terms and notations which are not "units of measurement" in a strict sense, but which are used much as if they were.
From the U.S. National Institute of Standards and Technology, includes a brief summary of the International System of Units (SI), the modern metric system of measurement. Includes lists of units and prefixes; rules and style conventions; conversions; definitions; and history.
A network of publicly accessible WWW servers of standards organizations around the world. Provides links to information on international, regional, and national standardization and related activities and services.