How would you convert an Excel sheet to a CSV (comma separated values) file? You could open the Excel worksheet and export it to a csv file? Below is a screenshot of the Excel sheet in Microsoft 365.

This is very easy to do. First, open the Excel workbook and go to the worksheet containing your data. Go to File, Export, Change File Type, CSV (comma delimited), and click Save As. Provide a file name and a location and then click the Save button.