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Output
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Results are provided for informational purposes only and may contain errors. Please verify important information independently. Use of this tool is at your own risk.
What the CSV to Excel (XLSX) Converter does
The CSV to Excel Converter creates a real .xlsx workbook from CSV data, not a CSV file with a different extension. The rows go into a sheet named Data, with the header in row 1.
Cells get proper types: values that are clearly numbers are stored as numbers, so you can sum and sort them right away, while dates, codes and everything else stay text. That avoids Excel's habit of guessing wrong when it opens a CSV directly.
When to use it
- Sending data to someone who works in Excel and should not have to go through an import wizard.
- A CSV opens in Excel with garbled accents or merged columns because of encoding or delimiter settings.
- Turning an export into a workbook that can be shared, filtered and formatted; for JSON data use the JSON to Excel (XLSX) Converter.
- Preparing a template workbook from a CSV list of products, contacts or tasks for others to fill in.
Worked example
Input
order_id,customer,amount,date
1001,Ana,42.50,2026-09-01
1002,Ben,18.00,2026-09-03Output
converted-output.xlsx · sheet "Data"
A B C D
1 order_id customer amount date
2 1001 Ana 42.5 2026-09-01
3 1002 Ben 18 2026-09-03Common questions about the CSV to Excel (XLSX) Converter
Will the file open in Excel, Google Sheets and Numbers?
Yes. The download is a standard Office Open XML workbook that Excel, Google Sheets, LibreOffice Calc and Apple Numbers open without conversion.
Why are dates stored as text?
Dates are written as they appear in the CSV so that no day-month mix-up can happen during conversion. Select the column in Excel and apply a date format if you want calendar dates.
Can I convert an existing .xlsx file instead of pasting text?
Yes, the other way round works too: choose XLSX as the source format, click Upload and pick the workbook to get its first sheet as CSV, JSON or another text format.