Tigsoft today announced the availability of ConvertIt Pro 2.6.3, a unit conversion program containing over 2,500 unit conversions including currency. It features a scientific calculator, pi display, scratch pad for saving and quickly accessing frequently used conversions and online definitions. In addition it has up to 10,000 significant digits of accuracy for mathematical professionals. ConvertIt Pro is priced at US$17, and volume licensing discounts are available.