FREE Online Measurements Converters and Calculators
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  • All Measures

    Conversion table of non-metric measures into SI and CGS.

  • Anglo-Saxon Weights & Measures

    Catalogue of traditional British units with historical notes.

  • Body Height Weight Converter

    Converts from American to metric units and vice versa.

  • British Weights and Measures Association (BWMA)

    Pressure group opposing compulsory metrication. Political, consumer and transport information, discussion boards and links.

  • Chinese Numbers

    Put in a number and get the Chinese representation of that number. Also, converts from Arabic numeral back to the Chinese form.

  • 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.

  • 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.

  • Conversion Tables

    More than 40 different unit conversion tables.

  • Conversions-R-Us

    Convert units of measurements, bases, and PPT, RTF, DOC, and XLS files to HTML.

  • 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.

  • Convert-Me

    Metric, English old Russian, ancient Greek and Roman, nautical, typographical and astronomical conversions.

  • eFunda: Units and Constants

    The index page for units, fundamental constants, and currencies.

  • 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.

  • EngNet Engineering Units Converter

    Online calculator provides conversions between a number of common (and not so common) units.

  • Equatorial to Galactic Converter

    Convert Equatorial to Galactic Coordinates.

  • 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.

  • GoConvert

    Convert currencies and measurements.

  • GourmetSleuth

    Conversion calculators for distance, length, area, volume weights, and temperature.

  • 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.

  • iAgora Conversions

    Converts temperature, currency, length, and mass.

  • IEER Technical Classroom

    Table of conversion factors for selected units relevant to nuclear topics.

  • Interactive Unit Equivalency Table Generator

    Generates an equivalency table from any engineering unit to any other.

  • 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.

  • Math Connect

    Provides calculations of various types including metric conversion, engineering calculations, and computing finance loan payments. Also, has list of general math formulas.

  • Measurement Unit Converter

    Converts many units of measurement using a JavaScript 1.1 applet.

  • Measurement Units Translation

    Measurements converter for time, length, volume, and weight. Requires JavaScript.

  • Measuring Low Concentrations

    Explains with many examples the question of "What do ppm, ppb, ppt and ppq stand for?"

  • MegaConverter

    Resource for units, weights, measures, calculators and converters.

  • 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.

  • Metric Conversion Tables

    Conversion factors and online calculators for metric and imperial units.

  • Metric Conversion Tables to Imperial Measurements

    Standard-to-metric conversion factor tables with definitions, derived units and prefixes.

  • Metric Conversions

    Online calculator converts between metric, British, and American units.

  • 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.

  • MIT 3.091 Units Converter

    A tool for engineers and others to convert from almost any set of units to any other.

  • The Modern Metric System

    Dictionary of metric units explaining the principles and history of the system.

  • National Weights and Measures Laboratory (UK)

    Official imperial-to-metric conversion tables.

  • NIST Metric Information and Conversions

    Factsheets, regulations and conversion tools. Official site of the United States Metric Program.

  • 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.

  • Online Converters

    Provide online javascript converters and calculators for converting metric to imperial units and vice-versa.

  • On-Line Measures Converter

    Length, area, mass and weight, volume and capacity, temperature, angles, force, torque, electricals, cloth sizes, and some others.

  • 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.

  • The Scale of Things

    Illustrated examples of sizes in the metric system, from ters- to pico-.

  • SI Guide

    Provides translation of unit and prefix names for the international metric system (SI) into various languages. For some, transliterations are also given.

  • SI Units

    Reference information on the International System of Units (SI).

  • Temperature Converter

    Simple Celsius-Fahrenheit conversions.

  • Temperature Converter

    Converts Fahrenheit to Celsius and vice versa.

  • UK Metric Association

    Pressure group campaigning for the completion of metrication in the UK. History, legislation, and practical help.

  • 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.

  • Unit Conversions

    Online conversions from physics units to other physics units. Includes a comprehensive set of units with definitions.

  • Unit Converters

    Features conversion calculators for mass, area, length, pressure, data storage, time zone, angle, volume and temperature.

  • Units of Measurement

    Conversions and equivalences of the principal units of measure of the SI and Anglo-Saxon systems.

  • World Wide Metric

    Java metric conversion calculator for length, weight, pressure, and volume.

  • WWW Unit Converter

    Converts area, density, energy, force, length, mass, power, pressure, speed, temperature and volume, bits and bytes.