CSV to Excel
Convert CSV to Excel (XLSX) online for free. Upload a CSV file, preview your data and download an Excel spreadsheet without signing up.
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How to convert CSV to Excel
- 1Choose or drop one CSV file.
- 2Check the table and delimiter.
- 3Select Process and download the XLSX.
Convert CSV to XLSX without uploading files
Add a UTF-8 CSV, check the preview and select a delimiter manually if needed. Parsing and XLSX creation take place on your device.
Commas, semicolons, tabs, quoted fields and line breaks inside fields are supported. Empty rows and cells are preserved; a final line break does not add an extra row.
The result is an XLSX workbook with one worksheet. All values are stored as text, without automatic conversion to numbers, dates or formulas.
Frequently asked questions
Will leading zeros and long numbers be preserved?
Yes. Every value is saved as text, including identifiers, dates and strings starting with an equals sign.
Can I use Windows-1251?
No. Save your CSV as UTF-8 first. UTF-8 BOM is supported.
Is the result compatible with Excel and LibreOffice?
The output is a standard XLSX workbook with one worksheet and text cells for Microsoft Excel and LibreOffice Calc.
Where are my files sent?
CSV contents are not sent to a server. Parsing and conversion run in your browser.