CSV to Excel Converter

Opening a CSV directly in Excel is where data goes to die: leading zeros disappear, long numbers become scientific notation, and dates get reformatted to whatever locale your copy of Excel thinks you live in. This converter turns your CSV into a real spreadsheet file with a proper table structure, so the columns land where you expect them.

Paste the CSV, choose the delimiter — comma, semicolon (common in European exports), tab or pipe — and check the preview. Quoted fields containing commas, escaped double quotes and multi-line cells are all parsed correctly. Mark the first row as a header and it becomes a bold header row in the downloaded file.

The download is a .xls workbook that opens natively in Microsoft Excel, Google Sheets, LibreOffice Calc and Apple Numbers. Nothing is uploaded: the parsing and the file generation both happen in your browser, which makes this safe for customer lists, payroll exports and anything else you cannot legally put through an online upload service.