ProKon is an impressive engineering units conversion utility for Windows 95/98/ME/NT/2000/XP.

It supports over 400,000 conversions, in 26 different categories, both to and from the SI (metric), Imperial (English), and U.S. Customary systems. Many specialized ancient and archaic units are also available. ProKon provides a periodic table of the elements (with pertinent data on each element) and many mathematical formulas, along with the density of over 625 different materials -- some common and some not so common. Context sensitive help is easily accessed throughout the program, and you can easily copy converted values to the Clipboard for pasting into other applications. ProKon features an additional 55 modules for a wide variety of scientific, construction and educational calculations. This is an update to add features, including data size, data transfer rate, currency exchange rate, temperature interval, irrigation, earth distance, altimetry, date calculations, random number generation, and much, much more.

Beginning with v10.0u, ProKon is compatible with Windows XP 64-Bit and Windows Vista 64-Bit
The primary use for ProKon is to convert numerical data to/from various units of measurement. While focusing on conversions between the metric and Imperial (English) systems of measurement, it is capable of performing conversions between many other units, foreign, ancient, and archaic. ProKon's capabilities have grown to the point that it is capable of performing well over 400,000 different unique conversions. You would have a difficult time finding a measurement unit that is not already included in ProKon. Even if you could, ProKon has the capability of storing any special conversion units that you might come up with in a special "Custom" conversion class.

The conversions in ProKon are grouped into various "Classes". Each class contains units that would logically fit in the Class description. Examples of classes are Mass, Length, Viscosity, Density, Concentration, Light, Temperature, Area, etc. In all, there are 26 Classes to select from. Each of the units contained in any Class can be converted to any of the other compatible units in the Class. Selection of a pair of units for conversion presents a calculation window in which calculations can be performed. Calculations are performed 'dynamically', meaning that as values are entered under one unit, the converted value is updated instantaneously to the other unit. Either conversion value may be edited to dynamically display results - useful for 'what if' calculations. All data shown can be printed, or copied to Windows clipboard and file.

ProKon also contains a Periodic Table of the Elements. Selecting the Periodic Table class shows the complete periodic table of the elements. Any element may be selected to bring up a window showing pertinent data on that element. Such things as atomic number, atomic weight, density, oxidation states, melting point, boiling point are shown along with descriptive text on the element giving reactivity, uses, sources, prevalence, toxicity, etc. All data shown can be printed, or copied to Windows clipboard and file