This category in other languages:

  • UK Metric Association - Pressure group campaigning for the completion of metrication in the UK. History, legislation, and practical help.
  • Online Conversion - 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.
  • MegaConverter - Resource for units, weights, measures, calculators and converters.
  • Conversion Factors for Energy Equivalents - Physics laboratory of the National Institute of Standards and Technology (NIST) sponsors and maintains this reference resource of CODATA-recommended values of fundamental physical restraints.
  • Body Height Weight Converter - Converts from American to metric units and vice versa.
  • Measuring Low Concentrations - Explains with many examples the question of "What do ppm, ppb, ppt and ppq stand for?"
  • Convert It - Features converter tools for measurement, currency exchange, world time zones, time, finance, driving distance, Roman numerals, atmosphere, and body mass index. Also, has a basic calculator and periodic table.
  • Metric Conversion Tables to Imperial Measurements - Standard-to-metric conversion factor tables with definitions, derived units and prefixes.
  • Metric 4 US - A site promoting the metric system which argues why metric is better and English is worse. Provides an English-metric online calculator.
  • British Weights and Measures Association (BWMA) - Pressure group opposing compulsory metrication. Political, consumer and transport information, discussion boards and links.
  • eFunda: Units and Constants - The index page for units, fundamental constants, and currencies.
  • World Wide Metric - Java metric conversion calculator for length, weight, pressure, and volume.
  • Chinese Numbers - Put in a number and get the Chinese representation of that number. Also, converts from Arabic numeral back to the Chinese form.
  • Ron's Hard Conversion Tools - Online unit conversion calculators for volume, distance, weight, and temperature units. Also includes number conversion (decimal, hex, and binary) and a tool to convert characters to or from ASCII codes.
  • Cleave Books - Specialist Calculators - Features converters for perimeter measurements of geometric figures, fractions, percentages, number bases, loan repayments, growth and decay, cost of living index, fuel consumption, flow rate, specific energy, viscocity, and heat capacity.
  • Unit Converters - Features conversion calculators for atmospheric pressure, volume, distance, weight, velocity, temperature, and force.
  • On-Line Measures Converter - Length, area, mass and weight, volume and capacity, temperature, angles, force, torque, electricals, cloth sizes, and some others.
  • The Metric System - Outline of the metric system with emphasis on applications in physics.
  • Metric System Formulas - Formulas for converting imperial system into metric system. Site in both English and French.
  • NIST Metric Information and Conversions - Factsheets, regulations and conversion tools. Official site of the United States Metric Program.
  • GourmetSleuth - Conversion calculators for distance, length, area, volume weights, and temperature.
  • Convert-Me - Metric, English old Russian, ancient Greek and Roman, nautical, typographical and astronomical conversions.
  • Unit Conversion and Day of the Week - Converts such things as inches to centimetres, gallon to cubic metres or even curie to becquerel
  • Unit conversion and Reference Tables - Features converters for physical constants, SI units, temperature, currency, and temperature.
  • National Weights and Measures Laboratory (UK) - Official imperial-to-metric conversion tables.
  • Interactive Unit Equivalency Table Generator - Generates an equivalency table from any engineering unit to any other.
  • Units of Measurement - Conversions and equivalences of the principal units of measure of the SI and Anglo-Saxon systems.
  • International System of Units - Definitions of SI units and SI prefixes, units outside the SI, rules and style conventions, historical context for SI units, international aspects of the SI, and unit conversions.
  • Measurement Units Translation - Measurements converter for time, length, volume, and weight. Requires JavaScript.
  • EngNet Engineering Units Converter - Online calculator provides conversions between a number of common (and not so common) units.
  • Math Connect - Provides calculations of various types including metric conversion, engineering calculations, and computing finance loan payments. Also, has list of general math formulas.
  • How Many? - A dictionary of units of measurement: explanations of the metric system, System Internationale (SI), English customary system, and other modern measuring systems. Plus extensive links to other measurement-related Internet resources.
  • GoConvert - Convert currencies and measurements.
  • The Foot Rule - Convert units from one measure to another (e.g. meters to yards, liters to gallons). A very extensive collection of units and categories. Includes usage and definitions descriptions of units and categories.
  • Equatorial to Galactic Converter - Convert Equatorial to Galactic Coordinates.
  • Conversion Tables - More than 40 different unit conversion tables.
  • English Weights and Measures - History and usage of English/Imperial/customary weights and measures, with conversion factors, and pictures. Minims, drachms, pecks, bushels, rods, poles, perches, furlongs, ounces, fathoms, pints, gallons, nails, chains, chaldrons, tods, crowns, florins, groats, farthings and guineas.
  • iAgora Conversions - Converts temperature, currency, length, and mass.
  • MIT 3.091 Units Converter - A tool for engineers and others to convert from almost any set of units to any other.
  • Metric Conversions - Online calculator converts between metric, British, and American units.
  • IEER Technical Classroom - Table of conversion factors for selected units relevant to nuclear topics.
  • WWW Unit Converter - Converts area, density, energy, force, length, mass, power, pressure, speed, temperature and volume, bits and bytes.
  • Conversions-R-Us - Convert units of measurements, bases, and PPT, RTF, DOC, and XLS files to HTML.
  • Metric Conversion Tables - Conversion factors and online calculators for metric and imperial units.
  • Temperature Converter - Converts Fahrenheit to Celsius and vice versa.
  • Unit Conversions - Online conversions from physics units to other physics units. Includes a comprehensive set of units with definitions.
  • SI Units - Reference information on the International System of Units (SI).
  • SI Guide - Provides translation of unit and prefix names for the international metric system (SI) into various languages. For some, transliterations are also given.
  • Temperature Converter - Simple Celsius-Fahrenheit conversions.
  • Measurement Unit Converter - Converts many units of measurement using a JavaScript 1.1 applet.
  • All Measures - Conversion table of non-metric measures into SI and CGS.
  • The Scale of Things - Illustrated examples of sizes in the metric system, from ters- to pico-.