Didger can convert data between many different coordinate systems, including UTM and Lat/Long. To use Didger to convert UTM data to Lat/Long data, please follow the steps below.

1. Import the data file using File | Import.
2. When the Import Data File dialog opens, select the appropriate data import options, such as defining which fields of data are the X coordinate and Y coordinate data.
3. Click the Import button.
4. In the Assign Coordinate System dialog, set the Coordinate Space Type to Projected and expand the coordinate system tree to UTM (Predefined | Projected Systems | UTM).
5. Expand the datum or region your coordinates were collected in (i.e. WGS84 or North America), and then choose the coordinate system for the appropriate zone.
6. Click OK. Your data will display in the plot window.
7. Click Map | Change Projection and expand the coordinate system tree to Predefined | Geographic (lat/lon).
8. Select the appropriate datum (i.e. World Geodetic System 1984).
9. Click OK and the data will appear in lat/long.
10. Click File | Export.
11. In the Export dialog, set the Save as type to DAT Golden Software Data (*.dat). Give your file a name and click Save.
12. Click  OK in the Data Export Options dialog, and the new file with lat/long coordinates is created. 

Updated December 14, 2018