Welcome to GeoCalc Online®

GeoCalc Online is a geodetic parameter repository for all of Blue Marble Geographics’ software solutions. Geographic Calculator, the GeoCalc SDK, and the Global Mapper software solutions are able to query the service to update or augment any supported geodetic definition

GeoCalc Online Geodetic Registry

The GeoCalc Online 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. orders@bluemarblegeo.com

Geospatial Data Validation

Quality assurance is essential for any business decision-making process. GeoCalc is regularly updated and always current with the International Association of Oil and Gas Providers' EPSG Geodetic Parameter Dataset. Blue Marble also references many of NOAA’s National Geodetic Service libraries, tools and expertise along with other recognized international surveying associations where appropriate. We leverage our thirty years in business to provide the most reliable high quality references for geodetic data to our customers.

Powerful, Consistent, and Reliable

The GeoCalc Geodetic Registry is a great resource for surveyors, geodesists, and GIS analysts concerned with accurate and reliable coordinate reference system definitions as well as the most accurate coordinate transformations.

GeoCalc Online Subscription

Subscribe today to gain full access to a reliable tool for expert data processes and management. For a limited time basic functions of GeoCalc Online are available to anyone, but to unlock access the Point-to-Point Calculator and other system management options, register and sign-in with a Blue Marble account associated with an active Geographic Calculator order or trial subscription. If you have any questions, please contact out sales team at orders@bluemarblegeo.com.

Links to Help Page Topics:

Search - Access the Search from the Search option at the top of the page.

Point to Point Calculator - Access the Point-to-Point Calculator from the Calculation option at the top of the page.

Sign in - Sign into GeoCalc Online to access advanced functionality.

Object Definition - Definitions of Terms used in the Search and Calculator pages.