CSV to Excel — Outil en ligne gratuit

Why convert CSV to Excel

A CSV is just comma-separated text, so opening it directly can leave numbers misread, leading zeros stripped, and columns crammed into one. Converting to a real XLSX workbook puts each value in its own cell with proper types, so the data is ready to sort, filter, chart, and format. It is the difference between raw text and a usable spreadsheet.

What the conversion does

The tool reads the CSV's rows and columns, detects the delimiter, and writes them into worksheet cells in the XLSX format that Excel, Google Sheets, and LibreOffice Calc all open natively. Headers become the first row, numbers are stored as numbers rather than text, and the structure is preserved exactly so nothing is lost in translation.

Handling tricky data

Real CSVs contain quoted fields, commas inside values, and line breaks within cells. A proper parser respects those quoting rules so a value like a full address stays in one cell instead of splitting. This careful parsing is why converting through a dedicated tool is more reliable than simply renaming the file extension to xlsx.

Private and local

CSV to Excel runs entirely in your browser. Your data is parsed and written into a workbook locally and is never uploaded or stored, so business records and personal data stay on your device. The conversion is quick even for large files and no server sees your rows.

Comment l'utiliser CSV to Excel

1. Open the CSV to Excel tool and add your CSV file.
2. Let the tool parse the rows and columns in your browser.
3. Wait for the XLSX workbook to build.
4. Review the detected columns.
5. Download the Excel file.

Open exported data cleanly

Outils liés

• Excel to CSV
• CSV to JSON
• JSON to CSV
• ODS to CSV