Data

Excel to CSV Converter

Turn Excel workbooks into CSV without uploading. Processing stays on your device — no upload, no account.

How to use Excel to CSV Converter

  1. Upload an Excel file.
  2. Pick a sheet.
  3. Download the CSV.

Why use this free excel to csv tool?

  • All processing happens locally in your browser. Your files are never uploaded to a server.
  • Sheet picker.
  • SheetJS parse + CSV export.
  • Works offline after load.

Technical details

SheetJS reads the workbook; sheet_to_csv produces RFC-style CSV. Formulas may appear as cached values.

Excel to CSV Converter FAQ

Are workbooks uploaded?

No. All processing happens locally in your browser. Your files are never uploaded to a server.

Multiple sheets?

Export one sheet at a time via the sheet picker.

Delimiter?

Standard comma-separated CSV.

Encrypted Excel?

Password-protected files are not supported.

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