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A variety of tools for determining an array of metrics and measurements.

Includes tools to solve equations like Includes calculators for velocity, density, financial, geometry, algebra, calculus, astronomy, chemistry, physics and webpage color coders. Also, has trivia fact pages, such as state demographics and presidents.

Online calculators for a variety of conversions and calculations.

Conversion calculator of physical measurements. Includes metric and English units and also a large range of other possible conversions.

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

Collection of free Java measurements converters, calculators, unit translators and Java Games with downloadable source code and zip files.

A comprehensive site for conversion calculations. Convert 165 currencies and hundreds of measurements.

Provides links to online calculators and worksheets. These are interactive, educational tools that provide information to help in planning, solving and making decisions for a variety of problems and tasks that come up daily.

Provides calculations of various types including metric conversion.

Best Place to Figure What Equals What. megaConverter is THE resource for units, weights, measures, calculators and converters.