CSV to Excel Converter

Runs in your browser — your files are never uploaded.

Turn a CSV file into a real Excel workbook. OkConverter parses your CSV and writes a proper .xlsx file that opens cleanly in Excel, Google Sheets and Numbers. Everything runs locally in your browser, so your data is never uploaded.

How to convert CSV to Excel

  1. 1

    Drop your .csv file onto the box, or click to choose one.

  2. 2

    OkConverter parses the rows and builds an .xlsx workbook with one sheet.

  3. 3

    Click "Download" to save your Excel file.

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Frequently asked questions

Is the output a real Excel file?+

Yes. It is a genuine .xlsx workbook, not a renamed CSV, so it opens natively in Excel, Google Sheets and Apple Numbers.

Will quoted fields and commas be handled?+

Yes. OkConverter uses a full RFC 4180 parser, so quoted fields, embedded commas and line breaks land in the correct cells.

Are my files uploaded?+

No. The conversion runs entirely in your browser on your device — your CSV is never uploaded.

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