XLSX to CSV Converter: free online, private and unlimited
Convert XLSX to CSV online, free and private
Every sheet of your Excel workbook is saved as a UTF-8 CSV. A workbook with several sheets gives one CSV per sheet in a ZIP. Add your file, press Convert and download the result. The conversion runs in your browser, so your XLSX file is not uploaded to any server.
What is XLSX?
XLSX is the current Microsoft Excel format. It holds sheets, formulas, number formats and styling.
What is CSV?
CSV stores a table as plain text with one row per line and commas between the cells. Almost every database and spreadsheet can import it. Here you get a UTF-8 CSV file (one file per sheet, zipped when there are several).
Tips for converting XLSX to CSV
The CSV has a byte-order mark so Excel opens Hindi and other non-English text correctly.
Need a different format?
The Universal File Converter detects your file and offers every format it can be turned into. Related conversions: XLSX to PDF, XLSX to JSON, XLSX to XLS, XLS to XLSX.
Frequently asked questions
How do I convert XLSX to CSV?
Add your XLSX file with the button above or drop it on the page, check that CSV is selected, press Convert and download the file.
Does converting XLSX to CSV reduce quality?
CSV does not lose detail through compression, so the conversion does not reduce quality. What the result can show is limited by what XLSX contained.
Are my XLSX files uploaded?
No. The file is read and converted by your own browser. It never leaves your device, so private documents and client work stay private.
Can I convert many XLSX files at once?
Yes. Add as many files as you like. Each one is converted and you can download them one by one or all together as a ZIP.
Is there a file size limit?
There is no limit set by us. Very large files depend on the memory of your device and browser, so convert huge files on a desktop or laptop.
Is this tool really free?
Yes. There is no sign-up, no daily limit and no watermark.
Are my files uploaded to a server?
No. The tool runs in your browser, so your files stay on your device.
Does it work on mobile and tablets?
Yes. It works in current versions of Chrome, Edge, Firefox and Safari on desktop, tablet and phone.