Converting a Hyper-V VM with a vhdx drive to a VMWARE format
Solution 1:
As far as I know, no VMware tools exist that directly convert VHDX disks yet. What you can do is power on the VM and treat it as a P2V migration using Converter and migrate that way.
Solution 2:
If you would like to convert only the virtual disk, not entire VM, you can also use qemu-img for Windows: it's free, portable and it runs under CMD.
For example, to convert VHDX to VMDK:
qemu-img.exe convert FileSource-Image.vhdx -O vmdk FileDestination-Image.vmdk
Extracted from: http://www.sysadmit.com/2016/08/vmware-convertir-vhdx-en-vmdk.html
Solution 3:
Convert to .VHD then use StarWind V2V Converter.