Excel (XLSX) to CSV Converter
Get CSV files from an Excel workbook without opening Excel — one CSV per sheet, with the delimiter and encoding your import tool expects.
Runs in your browser
How to use
- Drop an .xlsx file.
- Choose the delimiter and encoding.
- Download the CSV for each sheet.
How it works
The workbook is read in your browser with the read-excel-file library. Cell values (not formulas) are exported; dates are written in ISO format (YYYY-MM-DD). UTF-8 with BOM makes Excel re-open the CSV with the right encoding; plain UTF-8 is best for code and databases.
The legacy binary .xls format isn't supported — save it as .xlsx first.
Examples
- Import into a web shop
- Export the “Products” sheet as UTF-8 CSV for an e-commerce import.
Common uses
- Importing spreadsheet data into apps
- Version control of data
- Sharing data without Excel
Privacy & security
This tool runs entirely in your browser. Your files and text are never uploaded to our servers — processing happens on your device and results are created locally. How each tool handles files
Frequently asked questions
Are formulas exported?
Only their calculated values.
Why UTF-8 with BOM?
The invisible BOM marker tells Excel the file is UTF-8, so accents display correctly.
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