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Online Calculators

ABE Volume Calculator Page, Allchin Measurements Converter, Body Height Weight Converter, Calcula, Calculate for Free, Calculator City, Calculator.com, Chinese Numbers, Conversion Factors for Energy Equivalents, Conversion of Units

Software

Convert, OmniCon, QM Laboratories, Time and Metric Conversion Wizard, Unit Conversion software from ESSCo

All Measures

http://www.allmeasures.com/

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

Anglo-Saxon Weights & Measures

http://members.aol.com/Jack%20Proot/met/spvolas.html

Catalogue of traditional British units with historical notes.

British Weights and Measures Association (BWMA)

http://www.bwmaonline.com/

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

Conversion Tables

http://conversion.maribi.com/

More than 40 different unit conversion tables.

English Weights and Measures

http://home.clara.net/brianp/index.html

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.

How Many?

http://www.unc.edu/~rowlett/units/index.html

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.

IEER Technical Classroom

http://www.ieer.org/clssroom/unitconv.html

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

International System of Units

http://physics.nist.gov/cuu/Units/index.html

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.

Metric 4 US

http://www.metric4us.com/

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

http://www.metric-conversion-tables.com/

Conversion factors and online calculators for metric and imperial units.

Metric Conversion Tables to Imperial Measurements

http://www.simetric.co.uk/

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

National Weights and Measures Laboratory (UK)

http://www.nwml.gov.uk/faq/faq_metric.asp

Official imperial-to-metric conversion tables.

NIST Metric Information and Conversions

http://ts.nist.gov/ts/htdocs/200/202/mpo_home.htm

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

SI Guide

http://www.metricmethods.com/SIguidelines.html

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

SI Units

http://www.chemie.fu-berlin.de/chemistry/general/si_en.html

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

Temperature Converter

http://www.albireo.ch/temperatureconverter/

Converts Fahrenheit to Celsius and vice versa.

Temperature Converter

http://www.ausmaps.com/converter.php

Simple Celsius-Fahrenheit conversions.

The Metric System

http://www.essex1.com/people/speer/metric.html

Outline of the metric system with emphasis on applications in physics.