gonvert is a conversion utility that allows conversion between many units
like CGS, Ancient, Imperial with many categories like length, mass, numbers,
etc. All units converted values shown at once as you type. Easy to add/change
your own units.

Features:

    - 51 categories, 981 units. See the entire list here.
    - All units converted values shown at once as you type.
    - Descriptions for many units.
    - Sort by Unit Name, Value, or Unit symbol.
    - Find Units.
    - Fully OPEN source so that you can add your own custom calculations
      and descriptions.

WWW: http://www.unihedron.com/projects/gonvert/