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

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.

Catalogue of traditional British units with historical notes.

Converts from American to metric units and vice versa.

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

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

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.

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.

More than 40 different unit conversion tables.

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

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

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

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.

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

Convert Equatorial to Galactic Coordinates.

Convert currencies and measurements.

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

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.

Converts temperature, currency, length, and mass.

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

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

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.

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

Convert volume (capacity), weight, length, area, temperature, pressure, torque, power and energy measures between U.S./Imperial and SI (Metric) units. Requires JavaScript.