Excel to CSV Converter
Export every sheet of an .xlsx workbook to clean, standard CSV.
Drop Excel files (.xlsx) here
or select to choose from your device
Files are processed on this device. Nothing is uploaded.
How to use Excel to CSV Converter
- Add one or more .xlsx workbooks. The sheets and a preview of the first one are shown.
- Choose all sheets or only the first, and the delimiter.
- Select Convert to CSV. With several sheets you get one file each, and a ZIP of all.
How it works
Each sheet is written as standard CSV (RFC 4180): fields containing the delimiter, quotes or line breaks are quoted, and quotes inside are doubled, so the file imports cleanly into databases and other tools. The output is UTF-8.
Cells keep their stored values, not their on-screen formatting: a cell showing 12% exports as 0.12, and a formula exports its last calculated result. Dates are written as YYYY-MM-DD (with the time when there is one), the only date form every system reads the same way.
Files are read and written by your browser on your device. Nothing is uploaded, so there is no size limit set by us and no copy of your data anywhere else. The reader is our own small, tested implementation, checked against workbooks produced by other software.
Example
A workbook with sheets “Orders” and “Customers” becomes book-Orders.csv and book-Customers.csv, ready to import.
Frequently asked questions
How do I convert an Excel file with several sheets?
Leave "All sheets" selected. Each sheet becomes its own CSV named after the sheet, and you can download them together as a ZIP.
Why do my accents look wrong when I open the CSV in Excel?
Excel assumes an old regional encoding unless the file starts with a UTF-8 mark (BOM). Tick the option to add it. Other programs do not need it.
Should I use commas or semicolons?
Commas are the standard. In countries where the decimal separator is a comma, Excel expects semicolons; choose that if the file is going back into such an Excel.
Are formulas exported?
Their results are. CSV has no concept of formulas.
Can it open .xls files?
No, only the modern .xlsx format (Excel 2007 and later). Open old .xls files in Excel or LibreOffice and save as .xlsx first.
Limitations
- .xlsx and .xlsm only: old .xls and password-protected workbooks are not supported.
- Formatting, colours, merged-cell layout, charts and images are not part of CSV.
- Numbers export as stored, not as displayed (rounding and currency symbols shown by formats are not applied).
Last reviewed November 9, 2026. How we build and test tools.