How to Encode an Excel File to UTF-8
Encoding your Excel files into a UTF format (UTF-8) can help to ensure anything you upload can be read and displayed properly.
How to Encode your Excel Files
Excel Versions 1999 to 2010
1. Go to your Excel document.
2. Click File (or the colourful circle icon, depending on the version of Excel you have).
3. Select Save As and choose the format of the Excel file you'd like to use.
4. Name your file, and update your file path as needed.
5. Click Tools, then select Web options.
6. Go to the Encoding tab.
7. In the dropdown for Save this document as: choose Unicode (UTF-8).
8. Click Ok.
9. Click Save.
Your file will now be saved as UTF-8 format.