CSV to Excel (XLSX) Converter

Instantly format raw data, tabs, and unformatted CSVs into clean, native Excel files.

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Enterprise-Grade Excel Generation

Excel Injection Shield

Protect your team from 'Excel Assassins.' Our engine automatically detects and neutralizes malicious formula triggers like =cmd| or @SYSTEM before generating the spreadsheet.

Multi-Line Cell Support

Perfect for HTML and Log files. Use the 'Multi-Line Blocks' feature to split rows by blank lines, allowing complex descriptions to stay intact within a single Excel cell.

Strict Grid Alignment

No more jagged arrays. Our engine scans your entire document to find the maximum column count and automatically pads short rows with empty values for a perfect Excel import.

Native Binary Generation

We don't just output text; we use a client-side library to generate a true, native `.xlsx` binary workbook. This prevents the classic 'SYLK File Corrupted' error.

Auto-Delimiter Detection

Just paste and go. Our engine intelligently detects if your data is separated by Tabs, Commas, Pipes (|), or Tildes (~) instantly.

100% Private & Secure

We never see your data. Because all formatting, cleaning, and Excel generation happens on your machine, your sensitive customer records never touch a third-party server.