Geocentric and Geodetic

This is a tired old question, and OT, but I will ask anyway.

Does anybody know of a web site that offers:

  1. Geocentric to Geodetic conversion using multiple DATUMS.
  2. Source code in something other than FORTRAN for this?

I’d be happy to just find the snippet with the correct constants. I need to account for the difference between Clarke 1866 and WGS 84.

I’m not sure about this, but try vterrain or USGS .

Not sure as well, but you can also try : (rasters) (vectors)

It handles reprojections between different coordinate systems, so it might be able to help you out.

Check out geotrans…

Tatuk GIS calculator did what I wanted. I found it on

Thanks for all the suggestions!