XLS Converter

jimbo45 said:

Hi there
Forget Libre Office

WPS office is much more compatible and will handle XLSX
The only thing the FREE version won't do is handle VB macros (other stuff like graphs and formulae work just fine - usually with no change required from the original EXCEL.

WPS Office 2016 Personal Edition - For Home and Student

(Works on Linux too !!!).

Cheers
jimbo

Didn't know it exists.
Thanks for the info.

Open in a desktop version of Excel, then save as .xlsx? Any version from 2007 on will work. Or, better yet, send your vendors a link to the Office Compatibility Pack and ask them to submit the documents as .xslx (which is the current standard). You're the customer, right?
Download Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint File Formats from Official Microsoft Download Center