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Transformation Software Print

WI-SDMS Translator v2.3.8 (replaced WISCON)

Like WISCON, WI-SDMS Translator is no longer maintained or supported by WisDOT. However, it still works (even on Windows 10) and This e-mail address is being protected from spambots. You need JavaScript enabled to view it (who previously worked for WisDOT and supported both of these older programs) can still be contacted for support of WI-SDMS Translator.

This customized software tool transforms coordinate values between geographic (lat/long), State Plane Coordinates (SPC), Universal Transverse Mercator (UTM), Wisconsin Transverse Mercator (WTM), Wisconsin County Coordinate Systems (WCCS), and Wisconsin Coordinate Reference Systems (WISCRS). Datums supported include NAD27, NAD83, NGVD29, NAVD 88, the geoids (1999, 2003, 2009, 2012A), the horizontal control adjustments (1986, 1991, 1997, 2007, 2011), and the vertical control adjustments (1991, 2007, 2012). It also supports user defined ASCII file formats as well as KML, SDMS, and a custom WisDOT WSI data format.

This program is free and currently available via this dropbox link:

What you want to do is download the ZIP file and extract it to the default location which will be C: and there it will create a directory called C:\survey-software. Under that you will see:

wi sdms window

Go into the help-file directory and find a docx file that will describe how to install and configure this software. Note that it involves more than just running a setup file as not all of the latest updates have yet been added to the compiled version. The docx file in the zip file has a few typos, so if you want the latest version of this document, please get it at this link:

If you prefer to watch a video for instructions, here is a link to a video I created that attempts to describe the process of installing and configuring this current version 2.3.8 of WI-SDMS Translator (after you have downloaded the ZIP file to your computer and extracted it to your C drive).

And here is the link to another video that gets into more detail related to defining User Defined ASCII files and using them with a function requiring the beta GEOCON program.

Note to users: be aware of several issues listed below related to WI-SDMS Translator v2.3.8:

§  When converting between coordinate systems the program does not automatically process intermediate results. Therefore, if attempting to convert from NAD 27 to NAD 83 (1991), the user has to do this in 2 steps. They first have to go from NAD 27 to NAD 83 (1986) and then convert the interim file from NAD 83 (1986) to NAD 83 (1991). In WISCON, such intermediate steps were handled in the back ground, but WI-SDMS Translator doesn’t currently do this (and whether it ever will is yet to be determined).  

§  The user guide is not updated for version 2.3.8, but there isn’t a lot changed from version 2.3.6 except bug fixes.

§  There is no web site supporting WI-SDMS Translator. Please contact Gene Hafermann at the email address below if you have questions related to installing, configuring, or using the.

§  When installing this software you do need administration privileges. In addition, if you are installing it on Windows 7, 8, or 10, and the user does not have admin rights, IT folks will need to grant the user read/write access to the C:\Program Files (x86)\WI-SDMS Translator directory and any subdirectories there under.

For questions concerning downloading, installing, configuring, and using v2.3.8 of WI-SDMS Translator, you should contact Gene Hafermann at This e-mail address is being protected from spambots. You need JavaScript enabled to view it .



The National Geodetic Survey released the GEOCON set of tools for performing three-dimensional coordinate transformations. GEOCON performs the transformation between NAD 83 ("HARN") coordinates and NAD 83(NSRS2007) coordinates. GEOCON also issues information about the quality of the transformation at each point, and notifications regarding poor quality results.

Blue Marble Geographic Calculator (BMGC)

The BMGC supports WISCRS (Wisconsin Coordinate Reference System) and many more file formats than WISCON, however, it does not support WCCS or the CAiCE SRV or AASHTO SDMS file formats. It also has a function called Best Fit that allows you to create a conversion between various adjustments if you know several points in each system. The cost is $2500 per copy and 25% of that for annual maintenance and support.


NADCON is the federal standard for NAD 27 and NAD 83 datum transformations.


Corpscon, Version 6.0, is a MS-Windows-based program which allows the user to convert coordinates between Geographic, State Plane, Universal Transverse Mercator (UTM) and US National Grid systems on the North American Datum of 1927 (NAD 27), the North American Datum of 1983 (NAD 83) and High Accuracy Reference Networks (HARNs). Corpscon uses the National Geodetic Survey (NGS) program Nadcon to convert between NAD 27, NAD 83 and HARNs.


VERTCON is the federal standard for NSRS vertical datum transformations. It computes an approximate modeled difference in orthometric height between the NGVD 29 and NAVD 88 datums based upon a latitude and longitude location.


The IGLD85 (International Great Lakes Datum of 1985) is a datum transformation tool that converts NAVD 88 Helmert heights to IGLD85 dynamic heights and vice-versa. This computation can be done interactively, or in batch mode by submitting a file of data points.


SPC83 converts NAD 83 state plane coordinates to NAD 83 geographic positions.