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How to convert XLSX to CSV
CSV is a simple text format for tables that almost every system understands. Here is how to convert XLSX to CSV and what to know about sheets, formulas and encoding.
Updated: November 2, 2026
When CSV is useful
CSV is convenient for importing data into a CRM, database, scripts and analytics tools. It does not store formatting, but it opens almost everywhere and is easy to process programmatically.
How to convert XLSX to CSV
- Open the XLSX to CSV tool.
- Upload the XLSX workbook.
- Wait for server processing.
- Download the CSV.
The server uses LibreOffice Calc and exports the first sheet. Files are deleted automatically.
What to know
- One sheet. CSV does not support multiple sheets; the first one is exported.
- Formulas as values. After conversion you get results, not formulas.
- Formatting is lost. Colours, fonts and merged cells are not transferred.
- Encoding. For non-Latin text, use UTF-8 if the import system supports it.
Limits
The maximum file size is 25 MB. Complex workbooks with macros and multiple sheets may require a desktop export.
Questions and answers
Are all sheets saved to CSV?
No, CSV stores one table. The current version exports the first sheet of the workbook.
What happens to formulas?
Formulas are saved as calculated values. The formulas themselves are not transferred to CSV.
Which encoding is used?
Usually UTF-8. If your import system requires another encoding, check its settings or use a desktop export.
Is formatting preserved?
No. Colours, fonts, merged cells and column widths are not preserved in CSV.