Convert Excel (.xlsx) files to CSV format. All in your browser.
Excel to CSV conversion transforms Excel spreadsheet files (.xlsx or .xls) into comma-separated values (CSV) format. CSV is a simple text-based format that stores tabular data and is widely supported by various applications, databases, and systems. Converting Excel to CSV enables you to use spreadsheet data in systems that don't support Excel files.
Our free online Excel to CSV converter processes all Excel files locally in your browser—no data is sent to servers, ensuring complete privacy and security. Simply upload your Excel file, select sheets, customize CSV options, and get instant CSV output ready for use in your applications.
Click "Choose File" or drag and drop your Excel file (.xlsx or .xls). The tool will automatically detect all sheets in the workbook. Files up to 10MB are supported, with a maximum of 200,000 rows per sheet.
Choose export mode: export a single selected sheet or export all sheets as a ZIP file. Customize CSV options: select delimiter (comma, semicolon, or tab), enable force quotes (values are automatically quoted per CSV standard when needed), include empty rows, and choose whether to export formulas as text or calculated values.
If your Excel file contains multiple sheets and you're exporting a single sheet, use the dropdown to select which sheet you want to convert to CSV. The preview table shows the first 20 rows of data.
The CSV output is automatically generated and displayed. Copy the result to your clipboard or download it as a CSV file. For multi-sheet export, click "Download All Sheets as ZIP" to get all sheets as separate CSV files in a ZIP archive. All CSV files include UTF-8 BOM for Excel compatibility.
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Upload your Excel file (.xlsx or .xls) using the file picker or drag and drop. The tool will automatically detect all sheets in the workbook. Select the sheet you want to convert, adjust CSV options if needed, and download the result. You can also export all sheets as a ZIP file.
Yes! Select 'Export all sheets as ZIP' option. The tool will convert each sheet to its own CSV file and package them in a ZIP archive. Each CSV file will be named with the original filename and sheet name.
The tool supports both .xlsx (Excel 2007+) and .xls (Excel 97-2003) file formats. All standard Excel files with data in spreadsheet format can be converted to CSV.
By default, formulas are converted to their calculated values. You can enable 'Export formulas' option to export formulas as text where available. Note: CSV format does not natively support formulas, so they will appear as plain text and cannot be recalculated in spreadsheet applications.
You can customize the delimiter (comma, semicolon, or tab), enable force quotes for all values (note: XLSX library automatically quotes values that need quoting per CSV standard), and choose whether to include empty rows. These options help ensure compatibility with different systems.
Yes! Our Excel to CSV converter is 100% free with no registration required, no usage limits, and no hidden fees. You can convert as many Excel files as you need.
No, all Excel processing happens locally in your browser. We don't store, save, or have access to any Excel files you upload. Your privacy is completely protected.
CSV format stores only the data values, not formulas (unless you enable formula export, which exports them as text). Formulas are converted to their calculated values by default. Cell formatting (colors, fonts, etc.) is not preserved in CSV format, as CSV is a plain text format.
Yes, for performance and browser stability: maximum file size is 10MB, and maximum rows per sheet is 200,000. Files exceeding these limits will show a clear error message.