xls.repair Repair a spreadsheet

CSV to Excel Converter

Build a clean .xlsx workbook from a CSV file.

CSV → XLSX

Drag & drop files here, or

Accepts .csv

  1. Upload your CSV file.
  2. It's written into a fresh .xlsx.
  3. Download the workbook.

Turn a CSV back into a clean .xlsx workbook — useful after you've rescued data with Excel to CSV and want a proper spreadsheet again.

More xls.repair tools

Repair Excel Recover a corrupted Excel spreadsheet — we rebuild its structure and hand back a clean, working .xlsx. Free, online, no watermark. Excel to CSV Extract each worksheet to a plain CSV — a robust way to rescue data from a shaky workbook.

Frequently asked questions

Will it detect columns?
Yes — each comma-separated value goes into its own cell, row by row.
Is the result a real Excel file?
Yes — a standard .xlsx that opens in Excel, Google Sheets and LibreOffice.