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ProKon is an impressive engineering units conversion utility for Windows. 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 includes an electrical architectural symbol database, thermometer emergent stem correction calculations and an exchange rate conversion module capable of updates via the internet.

ProKon features an additional 55 modules for a wide variety of scientific, construction and educational calculations. This update adds features including data size, data transfer rate, currency exchange rate, temperature interval, irrigation, earth distance, altimetry, date calculations, random number generation, and much more.

This download is the free trial version of ProKon - The Calculation Companion. The full version can be purchased directly from the author for around $24.95 USD. See program documentation for details.