The GeoCalc Geodetic Registry is an online library of the mathematical parameters used for coordinate transformation and positioning for all of Blue Marble Geographics' software solutions. This repository is actually much more than a library though, as it is the database utilized by the Geographic Calculator, the GeoCalc SDK, and Global Mapper software solutions as a querying service to update or augment any supported geodetic definition. GeoCalc Online is a powerful, web hosted version of GeoCalc that is becoming the basis for new versions of our Geographic Calculator tool set. You too can host your own copy on your company's private servers. Just reach out to us for more information to learn more.