网站简介：Provides free online conversion tools, which can be added to any websites. It also offers metric conversion tables for download and print.
网站简介：USA. Federal agency, cooperating with industry to develop and apply technologies, measurements, and standards.
网站简介：Offers conversion tools for length, volume, temperature, astronomical, clothing sizes, computer bytes, cooking measurements, time zones, density, energy, finance, flow rates, force frequency, and some fun pages.
网站简介：Interactive calculators used to for converting between currencies, weight, volume, mass, time, distance and more.
网站简介：Provides a free online conversion tool to easily convert between different units of measurement in more than 70 categories.
网站简介：ASTM develops technical standards for industry worldwide.
网站简介：International organization within which governments and the private sector coordinate global telecom networks and services.
网站简介：Includes online conversion and calculation tools. Possible to change the precision of the result.t.
网站简介：Online conversions for many measurement systems.
网站简介：Offers a wide variety of unit conversion tools and conversion charts for fast lookup.
网站简介：Provides unit conversion tools for various math and physical units in different languages. Easy conversion of length, area, volume, weight, temperature, time, angle, speed, storage size, number systems, charge, energy, power and pressure units.
网站简介：Publishes fire and building safety standards including the National Electrical Code.
网站简介：Information about electric, electronic and electrotechnical international standards, compliance and conformity assessment for electronics and electronic equipment, and international electrical standards information.
网站简介：National Electrical Code explanations, training and tips. Includes downloadable resources and a forum.
网站简介：Governmental agency dedicated to the promotion of Singapore's economic growth and productivity; statistics and information on services and products.
网站简介：The production of technical specifications for a third generation mobile system based on the evolved GSM core networks.
网站简介：Promotes the innovative application and use of information systems and information technology in further and higher education. Lists opportunities, funding, issues and contact details.
网站简介：ANSI promotes voluntary consensus standards and conformity assessment systems in the U.S. and is the US member body to ISO and represents US interests to ISO and IEC.
网站简介：A non-profit making organization whose mission is to produce the telecommunications standards that will be used throughout Europe and beyond.
网站简介：Online reference collection used by applied scientists and practicing engineers to quickly locate technical information.
网站简介：Information about standardization activities and training/certification services. In French and English.
网站简介：leader in the development and dissemination of voluntary, consensus-based industry standards
网站简介：Spanish Association for Standardisation and Certification. Information on standards, training and other services.
网站简介：Information and regulation concerning standards in Iran. [English, Farsi]
网站简介：Converts area, density, energy, force, length, mass, power, pressure, speed, temperature and volume, bits and bytes.