Excel XLSX to CSV Converter
Export a selected Excel worksheet as UTF-8 CSV, preserving text cells and using stored formula results.
Your input is sent to this site only after you choose Convert on server. The conversion runs for this request and no history is saved. Upload up to 4 MiB combined; Office files have a 2 MiB limit.
Choose your file
Choose a file or load the example to see how the converter works.
Choose your options
The defaults work for most files. Change a setting only when you need to.
How to use Excel XLSX to CSV Converter
- Choose the example or select your input files in the required format.
- Check the options, then select Convert on server to upload and process the input.
- Review the result and download the converted file.
What this conversion produces
Export one worksheet from an XLSX workbook for a data import or a quick inspection in a text editor. Select the worksheet by its one-based position. The output contains comma-separated UTF-8 cells with standard quoting for embedded commas, quotes and line breaks. Empty cells inside the used table remain empty instead of shifting later values to the left.
Supported input and practical limits
Only modern XLSX workbooks are accepted; legacy XLS and password-protected files are unsupported. Formulas are not executed and use cached results only, so a formula without a saved result is an error. Styling, charts, merged-cell geometry and macros are not exported. Files are limited to 2 MiB compressed, 32 MiB expanded ZIP content and 50,000 worksheet cells. Dates become ISO date-time strings rather than locale-specific spreadsheet displays.
What should I know before converting?
Only modern XLSX workbooks are accepted; legacy XLS and password-protected files are unsupported.
Is input uploaded?
This tool sends input to this site’s conversion API after you select Convert on server. Files use bounded workers and, when needed, private temporary folders deleted after processing or cancellation. No conversion history is saved. The converter does not upload files to a third-party conversion service.