XLSX is the standard workbook format used by Microsoft Excel and compatible spreadsheet apps.
XLSX to CSV converter
Convert XLSX document files to CSV with on-device browser processing. Your files never leave your device.
Your files never leave your device
Why convert XLSX to CSV?
CSV stores table data as delimited plain text that opens in spreadsheets and database tools.
Extract spreadsheet worksheets into portable CSV files.
How to convert XLSX to CSV
Select the source file
Choose one or more XLSX files from your device.
Convert in your browser
The CSV target is selected automatically and processed with the local converter engine.
Download the result
Save the converted file directly from browser memory. No source file upload is required.