State Plane Coordinate to Latitude Longitude

Question

I search for a C++/C# library or tool they can convert State Plane Coordinate to latitude/longitude.

Thanks

Hi, can you expand your question with an example of coordinates you want to convert between, and how you did it if you already solved it? — trusktr

Spacedman Spacedman · Accepted Answer · 2013-03-06T07:53:07

You want PROJ, the Cartographic Projections Library: https://proj.org/index.html

This used to be referred to as "PROJ4" but is now "PROJ".