Here are some PowerShell command line to convert ALL the files within a directory
in .docx from .md
gci -r -i *.md |foreach{$docx=$_.directoryname+"\"+$_.basename+".docx";pandoc -f markdown -s --citeproc $_.name -o $docx}
in .pdf from .md
gci -r -i *.md |foreach{$pdf=$_.directoryname+"\"+$_.basename+".pdf";pandoc -f markdown -s --citeproc $_.name -o $pdf}
from docx in md
gci -r -i *.docx |foreach{$md=$_.directoryname+"\"+$_.basename+".md";pandoc -f docx -s $_.name -o $md}
You can play around looking at syntax to convert from/ to other formats