Blue Marble Geographics


Blue Marble Geographic Calculator
The leading coordinate conversion tool world-wide. You can transform between coordinate systems, calculate the distance and azimuth between two coordinates, compute grid convergence, point scale factor, datum shifts and grid shifts.

Over the last ten years the Geographic Calculator has become the standard tool for coordinate conversion worldwide. You should have this product in your toolbox!

The Geographic Calculator converts individual coordinates, point databases, and map files from virtually any coordinate system, datum, and map projection to any other.

You can transform between coordinate systems, calculate the distance and azimuth between coordinates, and calculate coordinates at a known distance and azimuth from known coordinates. The Geographic Calculator also computes grid convergence, point scale factor, datum shifts, and grid shifts. Of course, the Geographic Calculator is professionally documented and supported.