If the trial limitations are a dealbreaker and you don't want to purchase a license, consider these highly capable 3D converters:
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Autoconverter - Import / Export / Convert 3D Mesh Files Automapki Autoconverter 2.2.4 Free Download
Mesh formats like OBJ reference external material files ( .mtl ). If the trial limitations are a dealbreaker and
Use a mesh repair tool to close open holes before importing the file into Autoconverter. Memory Allocation Failures Automapki Autoconverter 2.2.4 Free Download