Convert Excel to CSV Online
CSV to ExcelConvert Excel files to CSV directly in your browser with no upload, no signup and no software to install.
Click to upload or drag a file here
Supported: XLSX, XLS · Processed entirely in your browser
Excel to CSV strips a spreadsheet down to plain, comma-separated values — the stripped-down format many tools, scripts and import systems require instead of a full Excel file.
Why would you need to strip a spreadsheet down to plain CSV at all?
Formulas, formatting, multiple sheets and charts are all things a script, database or import system typically can't read — CSV keeps just the raw values in a plain-text format that's universally readable by almost any program, which is exactly why so many import tools ask for CSV specifically rather than accepting a native Excel file.
What gets lost when converting Excel to CSV?
Formulas convert to their calculated result rather than staying live, and formatting, colors, charts, and anything beyond a single sheet's worth of plain values don't carry over — CSV is deliberately just rows and columns of raw data, nothing else.
Is this private and free, and does it run in the browser?
Yes — conversion happens directly in your browser rather than uploading the spreadsheet anywhere, with no sign-up, cost or limit on how many files you convert.
Why is CSV still the universal export format even though almost nobody writes one by hand?
Because CSV was standardized specifically to be a universal exchange format, not a native working format for any one program. The Internet Engineering Task Force's RFC 4180, published in October 2005, formally documented CSV's structure and registered its official "text/csv" MIME type — codifying a format that had already been informally in use since IBM's mainframe-era Fortran tools introduced comma-separated data entry back in 1972. That gap of over three decades between informal convention and formal standard is part of why CSV export buttons are everywhere today: nearly every piece of software built since has a straightforward, well-specified target to export to that doesn't require supporting Excel's own considerably more complex native file format.
Is Excel to CSV free to use?
Yes. Excel to CSV is completely free, with no sign-up and no usage limits.
Do I need to install any software?
No. Excel to CSV runs directly in your web browser — nothing to download or install.
Is my data kept private?
Everything happens on your device. We never receive or store the file or text you enter into Excel to CSV.