Landscape Heighmap and scale

Thanks for replay, IronicParadox. It’s however not really about the units in max. Well, it is, but it isnt. Its more about how to go about baking a proper heightmap from the sculpted mesh while keeping it to scale. I usually take it into max after a Zbrush sculpt, xform it, check it, and I only stick too cm. Its a fairly small island piece Im want to have imported 1:1. So, in other words, its the proper workflow for baking a heightmap and importing it in UE4 so it stays 1:1 inside UE4. I did use Xnormal, but there’s something I am missing in my understanding since I need the power of 2 bakes in this process.

But, Since this piece I am making is fairly small I think I am just going to sculpt it directly in UE4.