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  1. Conversion Calculator - Use CalculatorPlus's simple and easy to use Conversion Calculator to convert values between different systems of common measurements - in English or other languages using the multilingual translator.
  2. Conversion of Units - Convert temperature, measurement, heat and energy units, as well as time, velocity and currency.
  3. Convert It!
  4. Currency Calculator
  5. Dictionary of Units of Measurement
  6. Distantias - "Calculate driving distances between two points, calculate fuel costs, flight distances from airport to airport, distances in a straight line cycle trip distances, travel and public transport distance and journey times between two points and more."
  7. Good Calculators - "This website provides a variety of online calculators, some math, engineering and conversion calculators."
  8. Greenwich Mean Time (GMT)
  9. How Far Is It? - - distances between 500 cities worldwide plus very basic information about each location
  10. Measurements Converter - friendly JavaScript interface converts length, weight, area, speed, temperature and more, into different units and unit systems.
  11. Megaconverter
  12. Metric Conversion Card - Use this easy chart to convert inches to centimeters, pounds to kilograms, Fahrenheit to Celsius, and more.
  13. Metric Conversions - "Metric Conversion calculators, tables and formulas for temperature, length, area, volume and weight metric conversions."
  14. NIST Time and Frequency Division - develops and operates standards of time and frequency
  15. Online Unit Conversion - "International Unit Conversion Calculator - Free unit conversion calculator for easy measurement conversion. International Unit Converter allows metric measurement conversions in many categories."
  16. Periodic Table of the Elements
  17. Roman Numeral Converter - Visual Roman Numeral Converter
  18. Royal Society of Chemistry: Visual Elements Periodic Table - "The Royal Society of Chemistry’s interactive periodic table which includes Murray Robertson’s Visual Elements artwork. Hover over the elements to see key facts and the supply risk which highlights elements where limited abundance may hinder the production of new technologies. Click the elements for interesting facts, atomic data, isotopes and more."
  19. Unit Conversion Factors
  20. United States Naval Observatory - The United States Naval Observatory (USNO) provides a wide range of astronomical data and products, and serves as the official source of time for the U.S. Department of Defense and a standard of time for the entire United States.
  21. Universal Currency Converter, The - allows you to perform interactive foreign exchange rate conversion on the Internet.
  22. U.S. Metric Association (USMA) - national non-profit organization, founded in 1916, which advocates U.S. conversion to the International System of Units (SI), also called the modern metric system.
  23. WWW Unit Converter
  24. Walk Through Time, A - the evolution of time measurement.
  25. What time is it? - current time, from the US Naval Observatory Master Clock.
  26. World Time Zones Maps with Current Time

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[ Fast Facts ] [ First Things First ] [ Quick Reference ] [ Site Map ] [Contact Us ]