Tralaine

Tralaine was designed to help with the conversion of geographic coordinates in data files from one geographic coordinate system to another; latitudes and longitudes to State Planes or State Planes to UTMs for example.
Tralaines Coordinate System Dictionary includes over 1,000 coordinate system definitions and you can modify any of these or define your own. Tralaine can handle 15 widely used file formats, converts from NAD27 to NAD83 or between any two of the 161 Datums in its Datum Dictionary. Everyone on your staff can be an expert cartographer.
Here are some key features of "Tralaine":
ï¿­ Coordinated conversion! Converts coordinates in data files from one coordinate system to another.
ï¿­ Performs large complex coordinate conversions accurately in minutes.
ï¿­ Supports over 800 coordinate systems and datums.
ï¿­ Supports single and batch conversions.
ï¿­ Provides a Coordinate System Editor to create custom coordinate systems.
Requirements:
ï¿­ minimum of 8 megabytes of memory (i.e. RAM) and requires access to a floating point processor.
ï¿­ approximately 3 megabytes of disk space on the hard disk