Premium XLS to CSV Converter

Convert Excel spreadsheets to CSV format instantly in your browser. No uploads to server - 100% secure and private

Drag & Drop your Excel file here

or click to browse files (XLS, XLSX)

About Our Free XLS to CSV Converter

Welcome to our premium online XLS to CSV converter tool! This powerful utility allows you to convert Excel spreadsheets (XLS, XLSX) to CSV format instantly and securely, right in your browser. No files are uploaded to any server - your data remains 100% private on your device.

Why Convert Excel to CSV?

CSV (Comma-Separated Values) files offer several advantages over Excel formats:

  • Universal Compatibility: CSV files can be opened by virtually any spreadsheet program, database system, or programming language
  • Lightweight: CSV files are smaller and simpler than Excel files, making them easier to transfer and process
  • Database Import: Most database systems prefer CSV format for bulk data imports
  • Programming Use: CSV is the preferred format for data processing in Python, R, and other programming languages
  • Simplified Data: CSV contains only raw data without complex formatting, formulas, or macros

Key Features of Our Tool

  • Instant Conversion: Convert files in seconds with our optimized processing engine
  • No File Size Limits: Convert large Excel files without restrictions
  • Browser-Based: No installations required - works on any modern browser
  • 100% Secure: Your files never leave your computer
  • Preserves Data Integrity: Maintains all your important data during conversion
  • Multi-Platform: Works on Windows, Mac, Linux, iOS, and Android devices

How It Helps You

Our XLS to CSV converter is essential for:

  • Data Analysts: Prepare Excel data for analysis in Python, R, or statistical software
  • Developers: Convert Excel exports for database imports or application processing
  • Researchers: Share research data in a universally accessible format
  • Business Professionals: Convert financial reports for compatibility with various systems
  • Students: Prepare data for academic projects and assignments

Secure Processing

Your files never leave your computer. All conversion happens locally in your browser for maximum security.

Lightning Fast

Convert large Excel files in seconds with our optimized processing engine.

No Limits

Convert files of any size without restrictions. No registration required.

Frequently Asked Questions

Is this tool really free to use?

Yes, our XLS to CSV converter is completely free to use. There are no hidden fees, subscriptions, or limitations on usage.

How does the conversion work without a server?

We use advanced JavaScript libraries that run entirely in your browser. When you select a file, it's processed locally on your device - no data is sent to any server.

What Excel formats are supported?

Our tool supports both traditional .xls (Excel 97-2003) and modern .xlsx (Excel 2007+) file formats.

Will my formulas be preserved in the CSV?

CSV files only contain raw data values. Formulas will be converted to their calculated results. Formatting, charts, and macros are not preserved in CSV format.

Can I convert password-protected Excel files?

Currently, our tool does not support password-protected Excel files. You'll need to remove the password protection before conversion.