jt to fbx conversion is needed in case you want to transfer 3D models from JT Open CAD format to FBX format, typically due to the limited support for Siemen's JT format. Still many popular 3D modeling tools support JT format and these are your best bet for such export, considering that FBX format is supported in almost every tool. Of course same is possible with various 3D model exporters/converters.
Updated: August 11, 2023