Convert XLS to XLSX

[Vikir_Hansraj]

It would be helpful to automatically convert old Excel format i.e .xls to xlsx 

[nrongo]

I have the same problem. Have you been able to find any solution?

[anton-khrit]

Hi!

You can convert XLS to XSLX, DOC to DOCX, PPT to PPTX using actions from Plumsail Documentsconnector:

• Convert XLS to XLSX
• Convert DOC to DOCX
• Convert PPT to PPTX

Please review this article. It describes how it works.

[Brandon52]

Total CSV Converter by CoolUtils is a reliable tool for converting CSV and TSV files to PDF, XLS, XLSX and also supports other file formats. You can easily convert large volume files easily. You need to follow following simple steps :

STEP 1: Choose to encode 

STEP 2: Select File

STEP 3: Click on Convert

For more detail, you can check out official website - https://www.coolutils.com/TotalCSVConverter

[RobFischer]

why won't anyone address this? this gets brought up regularly for years now!