Geographic Calculator, Version 5.0 from Blue Marble Geographics is a multi-faceted utility program for working with coordinates from different systems.

To perform the Map File Conversion, as it is called in Geographic Calculator, the user selects an input file from a browser dialog box, along with specifying the “from” and “to” coordinate bases. If desired, the software will identify the output file it creates with the same name as the input file, but with a user-designated prefix. The screen for these settings is illustrated in Figure 1.