Saving an .xls as .csv
To save an Excel spreadsheet as a .csv file:
- With the desired spreadsheet open in Excel, click the File menu; then, select Save As.
 
The Save As dialog box appears.
- Browse to the location to which you would like to save your file.
 - In the Save as type: drop-down list, select csv (comma delimited).
 - Click Save.
 
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