XLS to CSV Converter
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What is a XLS file?
XLS is the proprietary spreadsheet format used by Microsoft Excel prior to the introduction of XLSX in 2007. It uses a binary file structure and supports formulas, charts, macros, and formatting.
XLS files remain widely compatible and are still used in many organizations. However, XLSX offers better performance and security.
How to open XLS files
XLS files can be opened using Microsoft Excel, Google Sheets, LibreOffice Calc, and other spreadsheet applications. They support charts, formulas, and formatting.
To ensure compatibility and security, convert XLS to XLSX or ODS using AnyConv or within Excel itself.
Key facts about XLS
- Full name: Microsoft Excel Binary File Format
- Extension: .xls
- MIME type: application/vnd.ms-excel
- Developed by: Microsoft
- Initial release: 1987
Useful links and resources
What is a CSV file?
CSV (Comma-Separated Values) is a simple text format for storing tabular data. Each line of the file represents a row in the table, and each value is separated by a comma or another delimiter such as a semicolon or tab.
CSV is a universal format supported by virtually all spreadsheet software, databases, and programming languages. It's popular for exporting and exchanging structured data between systems.
How to open CSV files
CSV files can be opened in virtually any spreadsheet or text editor, including Microsoft Excel, Google Sheets, and Notepad. They're widely supported for data import and export.
You can convert CSV files to XLSX, JSON, or XML using AnyConv or common data tools like Excel and Python scripts.
Key facts about CSV
- Full name: Comma-Separated Values
- Extension: .csv
- MIME type: text/csv
- Developed by: Unknown (widely adopted)
- Initial release: 1972
Useful links and resources
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❓ Frequently Asked Questions
- Do I need to register to convert XLS files?Not at all! You can convert XLS to CSV without signing up or installing anything.
- Is it safe to convert XLS to CSV on AnyConv?Absolutely. All XLS and CSV files are securely handled and automatically deleted after 1 hour. Nobody can access your data.
- Will the quality change after converting XLS to CSV?We do our best to preserve the original quality during XLS to CSV conversion. The result is accurate and clean.
- How long does it take to convert XLS to CSV?Most conversions from XLS to CSV take just a few seconds — even for larger files.
- Can I upload more than one XLS file?Yes, batch conversion is supported. You can convert multiple XLS files to CSV at once — fast and easy.
- What browsers support XLS to CSV conversion?All modern browsers! Chrome, Firefox, Safari, Edge — AnyConv runs online and supports converting XLS to CSV on any platform.