I am comparing two different Digital Elevation Models

  1. SRTM (Datum: EGM96)
  2. Cartosat (Datum: WGS84)

How to convert WGS84 to EGM96 in ArcGIS Desktop?

  • 1
    What version of ArcGIS? You can project rasters with vertical datums at Pro 2.1 and maybe Desktop 10.6.0.
    – mkennedy
    Mar 6, 2018 at 19:46
  • @mkennedy we have ArcGIS 10.5.1
    – dsbisht
    Mar 7, 2018 at 4:04

2 Answers 2


As commented by @mkennedy:

Vertical transformations are available for vector data at [ArcGIS Desktop] 10.5.1 and [ArcGIS] Pro 2.0. On-the-fly in Pro 2.1.

FAQ: Are vertical datum transformations supported in ArcGIS? suggests they may have been available in ArcGIS Desktop slightly earlier:

Vertical datum transformations are supported in ArcGIS version 10.4 and above. It is possible to apply a vertical datum transformation using the Project tool.

While it is possible to define the vertical coordinate system information for z-coordinates of several data formats in ArcGIS 10.3 and previous releases, vertical datum transformations are not supported in these releases.

For the latest ArcGIS Desktop help on this topic see Vertical datums.

Once we know the version of ArcGIS Desktop that you are using, and precisely what you have tried, we may be able to offer further assistance.

  • Thanks, as I mentioned I am dealing with the DEM (raster files) of two different sources. I will try and update the answer if problem persist.
    – dsbisht
    Mar 7, 2018 at 7:08

You cannot do a vertical datum transformation in ArcGIS. Give vDatum a try. https://vdatum.noaa.gov/

  • 1
    That's old information. Vertical transformations are available for vector data at 10.5.1 and Pro 2.0. On-the-fly in Pro 2.1.
    – mkennedy
    Mar 6, 2018 at 19:42
  • 1
    @mkennedy - Yes, but the original question is in regard to DEMs in ArcGIS Desktop. My answer is correct.
    – GBG
    Mar 19, 2018 at 2:44
  • 1
    And rasters in Pro 2.1.
    – mkennedy
    Mar 19, 2018 at 3:13

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