Paste CSV data and download a ready-to-open .xlsx Excel file. Private and instant.
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Quick answers to common questions
A standard .xlsx Excel workbook with one sheet named Sheet1.
Yes. The first CSV row becomes the first row in Excel.
No. Conversion happens locally in your browser.
Yes. Standard CSV quoting is parsed correctly.
Yes. .xlsx files can be uploaded to Google Sheets or opened in Excel.
Very large CSVs may be slow depending on browser memory.
The default sheet is Sheet1. Rename it after opening in Excel.
Yes.
Your data is processed entirely in your browser. Nothing is sent to any server.