Geodesy Online

Professional solution for geospatial data engineers to transform coordinates and calibrate coordinate system parameters. Supports geocentric, spherical, planar coordinate systems, various types of projections, geoid models. Performs horizontal and vertical correction, recalculation of normal heights into geodetic and vice versa. Converts your real time location to any supported coordinate system

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Do more with Geodesy Transform


Perform transformations between geocentric, geodetic and planar coordinate systems


Identify parameters using the method of least squares

EPSG registry

Add coordinate systems from EPSG registry and perform transformations between them

My Location

Transform coordinates of your location to any coordinate systems

NTv2, v1

Upload custom NTv2, v1 grid files for datum transforms


Calculate the normal height (Hn), ellipsoidal height (He) and geoid anomaly (A)


Create custom systems, edit parameters, apply geoids, set corrections, switch units


View coordinates on the map, add new ones, draw polygons and polylines

Work anywhere

Access app anywhere from any device with a browser and the Internet


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Basic Premium
Converting points from one coordinate system to another
Conversion of normal heights to geodetic and vice versa
Support for geocentric, spherical, planar coordinate systems
Support for Lambert, Mercator projections
Support EGM 96, EGM 2008 geoid models
Popular coordinate systems database
Creating custom coordinate systems
Copying existing coordinate systems
Manual input of system parameters
Manual input of coordinates
Support for various units of measure
Display coordinates on the map
Scatter plot for displaying points of local coordinate systems
Horizontal and vertical correction
Communication parameters adjustment -
Interactive point creation by clicking on the map -
Import / Export of projects -
Import / Export of points -
Importing coordinate systems from Mapinfo (Transverse Mercator, Lambert Conformal Conic) -
Creating a point using your current location -
Elevation data (SRTM) -
NTv2, v1 -

Frequently Asked Questions

Is Geodesy Online free?

At the moment, the service is in beta mode and is completely free.

What services does Geodesy Online offer?

Geodesy Transform service for coordinate transformations and coordinate system parameters calibration. More is coming soon.

What are Geodesy Online subscriptions?

Basic and Premium subscriptions. All registered users get access to the features described in the Basic subscription for free. The user has the right to activate a Premium subscription for free while the site is in beta mode and get access to an expanded set of features.

How long are your contracts?

Basic subscription is indefinite and free. All registered users get free access to the features described in the Basic subscription. Premium subscription is issued for 30 days and is free of charge. After 30 days, the premium subscription is canceled automatically and can be reactivated by the user for free.

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