I am trying to export grids for some work in GMT. The problems are:

1) GMT reads *.grd and I have not found the way to get it from Kingdom;
2) the coordinates of the grids have to be in latitude and longitude format but my Kingdom project was made using UTM.

I know that there are webpages offer coordinate system conversion but with numerous data points, this does not seem like a good solution.

Hence, I will really appreciate if you can suggest a workflow for this case.

Thank you very much.