- All Measures
table of non-metric measures into SI and CGS.
Weights & Measures
Catalogue of traditional British
units with historical notes.
- Body Height Weight
Converts from American to metric units and vice
- British Weights and Measures
Pressure group opposing compulsory metrication.
Political, consumer and transport information, discussion boards
Put in a number and get the Chinese representation
of that number. Also, converts from Arabic numeral back to the
- 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
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.
Convert units of measurements, bases, and PPT, RTF, DOC, and
XLS files to HTML.
- Convert It
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
English old Russian, ancient Greek and Roman, nautical, typographical
and astronomical conversions.
- eFunda: Units
The index page for units, fundamental constants,
- English Weights
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.
Engineering Units Converter
Online calculator provides conversions
between a number of common (and not so common) units.
to Galactic Converter
Convert Equatorial to Galactic Coordinates.
- The Foot Rule
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.
currencies and measurements.
Conversion calculators for distance, length, area, volume weights,
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
Table of conversion factors for selected units
relevant to nuclear topics.
Unit Equivalency Table Generator
Generates an equivalency
table from any engineering unit to any other.
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
- Math Connect
calculations of various types including metric conversion, engineering
calculations, and computing finance loan payments. Also, has list
of general math formulas.
Converts many units of measurement using
- Measurement Units Translation
Measurements converter for time, length, volume, and weight.
Explains with many examples the question
of "What do ppm, ppb, ppt and ppq stand for?"
Resource for units, weights, measures, calculators and converters.
- Metric 4 US
promoting the metric system which argues why metric is better
and English is worse. Provides an English-metric online calculator.
- Metric Conversion
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.
Online calculator converts between metric, British,
and American units.
Outline of the metric system with emphasis
on applications in physics.
- Metric System
Formulas for converting imperial system into metric
system. Site in both English and French.
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)
Metric Information and Conversions
and conversion tools. Official site of the United States Metric
- 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
- Online Converters
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.
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
Illustrated examples of sizes in the metric system,
from ters- to pico-.
Provides translation of unit and prefix names for
the international metric system (SI) into various languages. For
some, transliterations are also given.
Reference information on the International System
of Units (SI).
- Temperature Converter
Simple Celsius-Fahrenheit conversions.
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
conversion and Reference Tables
Features converters for
physical constants, SI units, temperature, currency, and temperature.
Online conversions from physics units to other
physics units. Includes a comprehensive set of units with definitions.
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
Java metric conversion calculator for length, weight,
pressure, and volume.
- WWW Unit
Converts area, density, energy, force, length,
mass, power, pressure, speed, temperature and volume, bits and