Online Calculators 13
Software 5
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Metrology - Technology, Science 84
Metrication - Science and Technology, Issues, Society 9
 All MeasuresAll Measures
 Conversion table of non-metric measures into SI and CGS.
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Allchin Measurements ConverterAllchin Measurements Converter
 Converts common measurements from metric to imperial and vice versa, with other systems included for selected quantities such as light years, picas, and Old Russian measures.
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Anglo-Saxon Weights & MeasuresAnglo-Saxon Weights & Measures
 Catalogue of traditional British units with historical notes.
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Body Height Weight ConverterBody Height Weight Converter
 Converts from American to metric units and vice versa.
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British Weights and Measures Association (BWMA)British Weights and Measures Association (BWMA)
 Pressure group opposing compulsory metrication. Political, consumer and transport information, discussion boards and links.
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Chinese NumbersChinese Numbers
 Put in a number and get the Chinese representation of that number. Also, converts from Arabic numeral back to the Chinese form.
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Cleave Books - Specialist CalculatorsCleave 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.
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Conversion Factors for Energy EquivalentsConversion 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.
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Conversion TablesConversion Tables
 More than 40 different unit conversion tables.
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Conversions-R-UsConversions-R-Us
 Convert units of measurements, bases, and PPT, RTF, DOC, and XLS files to HTML.
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Convert ItConvert 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.
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Convert-MeConvert-Me
 Metric, English old Russian, ancient Greek and Roman, nautical, typographical and astronomical conversions.
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eFunda: Units and ConstantseFunda: Units and Constants
 The index page for units, fundamental constants, and currencies.
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English Weights and MeasuresEnglish 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.
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EngNet Engineering Units ConverterEngNet Engineering Units Converter
 Online calculator provides conversions between a number of common (and not so common) units.
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Equatorial to Galactic ConverterEquatorial to Galactic Converter
 Convert Equatorial to Galactic Coordinates.
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The Foot RuleThe 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.
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GoConvertGoConvert
 Convert currencies and measurements.
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GourmetSleuthGourmetSleuth
 Conversion calculators for distance, length, area, volume weights, and temperature.
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How Many?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.
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iAgora ConversionsiAgora Conversions
 Converts temperature, currency, length, and mass.
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IEER Technical ClassroomIEER Technical Classroom
 Table of conversion factors for selected units relevant to nuclear topics.
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Interactive Unit Equivalency Table GeneratorInteractive Unit Equivalency Table Generator
 Generates an equivalency table from any engineering unit to any other.
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International System of UnitsInternational 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.
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Math ConnectMath Connect
 Provides calculations of various types including metric conversion, engineering calculations, and computing finance loan payments. Also, has list of general math formulas.
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Measurement Unit ConverterMeasurement Unit Converter
 Converts many units of measurement using a JavaScript 1.1 applet.
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Measurement Units TranslationMeasurement Units Translation
 Measurements converter for time, length, volume, and weight. Requires JavaScript.
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Measuring Low ConcentrationsMeasuring Low Concentrations
 Explains with many examples the question of "What do ppm, ppb, ppt and ppq stand for?"
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MegaConverterMegaConverter
 Resource for units, weights, measures, calculators and converters.
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Metric 4 USMetric 4 US
 A site promoting the metric system which argues why metric is better and English is worse. Provides an English-metric online calculator.
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Metric Conversion TablesMetric Conversion Tables
 Conversion factors and online calculators for metric and imperial units.
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Metric Conversion Tables to Imperial MeasurementsMetric Conversion Tables to Imperial Measurements
 Standard-to-metric conversion factor tables with definitions, derived units and prefixes.
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Metric ConversionsMetric Conversions
 Online calculator converts between metric, British, and American units.
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The Metric SystemThe Metric System
 Outline of the metric system with emphasis on applications in physics.
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Metric System FormulasMetric System Formulas
 Formulas for converting imperial system into metric system. Site in both English and French.
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MIT 3.091 Units ConverterMIT 3.091 Units Converter
 A tool for engineers and others to convert from almost any set of units to any other.
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The Modern Metric SystemThe Modern Metric System
 Dictionary of metric units explaining the principles and history of the system.
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National Weights and Measures Laboratory (UK)National Weights and Measures Laboratory (UK)
 Official imperial-to-metric conversion tables.
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NIST Metric Information and ConversionsNIST Metric Information and Conversions
 Factsheets, regulations and conversion tools. Official site of the United States Metric Program.
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Online ConversionOnline 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.
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Online ConvertersOnline Converters
 Provide online javascript converters and calculators for converting metric to imperial units and vice-versa.
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On-Line Measures ConverterOn-Line Measures Converter
 Length, area, mass and weight, volume and capacity, temperature, angles, force, torque, electricals, cloth sizes, and some others.
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Ron's Hard Conversion ToolsRon'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.
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The Scale of ThingsThe Scale of Things
 Illustrated examples of sizes in the metric system, from ters- to pico-.
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SI GuideSI Guide
 Provides translation of unit and prefix names for the international metric system (SI) into various languages. For some, transliterations are also given.
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SI UnitsSI Units
 Reference information on the International System of Units (SI).
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Temperature ConverterTemperature Converter
 Simple Celsius-Fahrenheit conversions.
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Temperature ConverterTemperature Converter
 Converts Fahrenheit to Celsius and vice versa.
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UK Metric AssociationUK Metric Association
 Pressure group campaigning for the completion of metrication in the UK. History, legislation, and practical help.
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Unit Conversion and Day of the WeekUnit Conversion and Day of the Week
 Converts such things as inches to centimetres, gallon to cubic metres or even curie to becquerel
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Unit conversion and Reference TablesUnit conversion and Reference Tables
 Features converters for physical constants, SI units, temperature, currency, and temperature.
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Unit ConversionsUnit Conversions
 Online conversions from physics units to other physics units. Includes a comprehensive set of units with definitions.
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Unit ConvertersUnit Converters
 Features conversion calculators for atmospheric pressure, volume, distance, weight, velocity, temperature, and force.
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Units of MeasurementUnits of Measurement
 Conversions and equivalences of the principal units of measure of the SI and Anglo-Saxon systems.
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World Wide MetricWorld Wide Metric
 Java metric conversion calculator for length, weight, pressure, and volume.
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WWW Unit ConverterWWW Unit Converter
 Converts area, density, energy, force, length, mass, power, pressure, speed, temperature and volume, bits and bytes.
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