http://www.mountaindogmedia.com/node/22
Import-Module "C:\Program Files\Microsoft Virtual Machine Converter\MvmcCmdlet.psd1"
ConvertTo-MvmcVirtualHardDisk -SourceLiteralPath "E:\VM\xxxxx.vmdk" -DestinationLIteralPath "C:\VHDXs"
Note that it is “ConvertTo-MvmcVirtualHardDisk “, not “ConvertTo-VirtualHardDisk”, as written in the MVMC_cmdlets.doc’s examples.
If you use “Microsoft Virtual Machine Converter 3.1” GUI, you will have to select a VMWare server as a source.
The powershell cmdlet allows you to convert a local .vmdk file.