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For more information on products and pricing, Please contact us using the information below the list of download items.

Java native interface wrapped versions of the C++ libraries are available upon request. Please contact for more information.


GeoCalc Windows C++


GeoCalc Linux

Sample Code

.NET Sample Code

Data and Shift Files

Please Note: Some local grid shift files are not freely available. In these cases, you will need to contact your local government authority to discuss licensing that dataset. Once the dataset(s) have been licensed, they can be used in the Geographic Calculator and GeoCalc libraries.

Legacy Version Policy Statement

Blue Marble Geographics is dedicated to customer service and to providing a reliable low cost GIS solution through Global Mapper. Unfortunately due to piracy issues we can no longer leave legacy versions online for downloading. We highly encourage you to use the latest versions of our software when at all possible. Staying current provides us the opportunity to offer the highest level of technical support and ensures that you receive the most current fixes, enhancements and technology. If you need a copy of an older version of the software please contact us directly and we will take your needs into consideration on a case by case basis. Thank you for being a loyal customer, please feel free to contact us at,, or by phone (207) 622-4622/800-616-2725 for more information any time.

Contact Information

Sales: U.S. and Canada Only: 1-800-616-2725
Sales: All Other Countries: +1-207-622-4622
Fax: +1-207-622-4656

Global Mapper Product Sales and Product Information:
Sales and Product Information for all other products:
Product Authorization and Licensing:

Blue Marble Geographics
77 Water Street
Hallowell, Maine 04347 U.S.A.