ConvertIt Pro is a unit conversion program containing over 2500 unit conversions including currency. It features a scientific calculator, Pi display, scratch pad for saving and quickly accessing frequently used conversions and online definitions. It has up to 10.000 significant digits of accuracy for the mathematical professionals. There is even an option to add new unit conversions and it will automatically check for updates.
||Free to try
||Windows 98/Me/2000/XP/2003 Server