No — the .xlsx is built in your browser, so data never leaves your device.

Does it keep my columns and headers?

Yes — the header row and all columns are preserved.

Will Excel open it natively?

Yes — it's a real .xlsx workbook, not a renamed CSV.

Can I convert CSV to JSON instead?

Yes — use the CSV to JSON tool.

CSV to Excel

Convert a CSV file to an Excel .xlsx spreadsheet.

100% private — runs in your browser, no upload

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Turn a CSV file into a native Excel .xlsx spreadsheet — VuConvert builds the workbook in your browser, with no upload, so your data stays private. Useful when a tool exports CSV but you need a proper Excel file with typed columns.

How to csv to excel

1.Upload a CSV file (or paste CSV text).
2.VuConvert parses it into rows and columns.
3.Preview the sheet.
4.Download the .xlsx file.

Frequently asked questions

Is my CSV uploaded?: No — the .xlsx is built in your browser, so data never leaves your device.
Does it keep my columns and headers?: Yes — the header row and all columns are preserved.
Will Excel open it natively?: Yes — it's a real .xlsx workbook, not a renamed CSV.
Can I convert CSV to JSON instead?: Yes — use the CSV to JSON tool.