CSV to XLSX — Convert CSV Files to Excel

CSV files contain raw data but lack formatting, formulas, and charts. The MyPDF CSV to XLSX converter turns your plain-text data into a fully functional Excel spreadsheet.

How to Convert CSV to XLSX

1. Upload your CSV file using drag-and-drop or the file selector.
2. Configure the delimiter type (comma, semicolon, tab) and encoding (UTF-8, Latin-1).
3. Download your XLSX file, ready to open in Excel, Google Sheets, or LibreOffice Calc.

CSV vs XLSX

Feature	CSV	XLSX
Formatting	None	Full (colors, fonts, borders)
Formulas	Not supported	Full support
Multiple sheets	One file per sheet	Multiple sheets per workbook
Charts	Not possible	Fully supported
Data types	Text only	Numbers, dates, currencies

Practical Tips

• Specify the correct delimiter. If your CSV uses semicolons (common in European exports), select that option to ensure columns parse correctly.
• Set the encoding to UTF-8. This prevents garbled characters in names, addresses, and other fields that may contain accented or non-Latin characters.
• Clean your CSV first. Remove blank rows or inconsistent headers before converting for a cleaner XLSX output.

Will my numbers be formatted correctly?

MyPDF detects numeric values and formats them as numbers in Excel. Dates are also recognized and converted to Excel date format when possible.

Can I upload large CSV files?

MyPDF handles CSV files up to 100 MB, which covers most data exports from databases, CRMs, and analytics platforms.

What if my CSV has no headers?

The converter works with or without header rows. If your first row is data rather than column names, the XLSX will reflect that accurately.

Related Tools

• XLSX to CSV — Export Excel data back to CSV format.
• CSV to PDF — Create formatted PDF tables from CSV data.
• XLS to XLSX — Upgrade legacy Excel files to modern format.
• XLSX to HTML — Convert spreadsheets to web tables.