Convert xls to xlsx

[nivaskannan]

There is a easiest way for this, i.e, using command prompt.

I have shared the details in the below thread.

How to convert xls to xlsx

Probably this is the easiest and very reliable option to convert the xls to xlsx conversion. “C:\Program Files (x86)\Microsoft Office\Office15\excelcnv.exe” -oice “C:\in\MyFile.xls” "C:\out\MyFile.xlsx” https://gist.github.com/Opiprog/8bb6f491578d4f23540ccd98e85288c3