I having a Excel document with a data table containing Chinese characters. I am trying to export this Excel spreadsheet to a CSV file for importing into a MySQL database.
<
The following method has been tested and used to import CSV files in MongoDB, so it should work:
In your Excel worksheet, go to File > Save As.
Name the file and choose Unicode Text (*.txt) from the drop-down list next to "Save as type", and then click Save.
Open the unicode .txt file using your preferred text editor, for example Notepad.
Since our unicode text file is a tab-delimited file and we want to convert Excel to CSV (comma-separated) file, we need to replace all tabs with commas.
Select a tab character, right click it and choose Copy from the context menu, or simply press CTRL+C as shown in the screenshot below.
Press CTRL+H to open the Replace dialog and paste the copied tab (CTRL+V) in the Find what field. When you do this, the cursor will move rightwards indicating that the tab was pasted. Type a comma in the Replace with field and click Replace All.
Click File > Save As, enter a file name and change the encoding to UTF-8. Then click the Save button.
Change the .txt extension to .csv directly in Notepad's Save as dialog and choose All files (.) next to Save as type, as shown in the screenshot below.
Open the CSV file from Excel by clicking File > Open > Text files (.prn, .txt, .csv) and verify if the data is Okay.
Source here