WinConverter is a unit conversion program. The version 1.61 is pre-configured to convert 1238 units in 50 categories. If you find WinConverter is missing a unit you need, it's easy to add custom units or categories
Unit Converter Pro can convert 1400 different units in 76 categories. It contains the most important conversion factors for lenght, mass, area, ... . It offers fully customizable databases.
The version 2 allows you to create conversion tables.