CSV to XLSX Converter
Paste or upload CSV → download as Excel .xlsx. Client-only.
About CSV to XLSX Converter
The CSV to XLSX converter turns comma-separated data into an Excel workbook. Paste CSV text directly or upload a .csv file, and download a ready-to-open .xlsx spreadsheet.
This is handy when you have exported data as CSV but need it in Excel format for sharing, formatting, or further editing. The conversion runs locally in your browser, so the data you paste or upload stays on your device and is not sent to any server.
Frequently asked questions
- Can I paste CSV instead of uploading a file?
- Yes. You can paste CSV text straight into the tool or upload a .csv file, whichever is more convenient.
- Does the converted file open in Excel?
- Yes. The output is a standard .xlsx file that opens in Excel, Google Sheets, LibreOffice Calc, and similar applications.
- How are commas inside values handled?
- Standard CSV quoting is respected, so values wrapped in quotes keep any commas they contain as part of the cell.