Convert XL to XLS

Understanding xl and xls file formats

XL files are legacy spreadsheet files created by early versions of Microsoft Excel, specifically Excel 2.0 and 3.0. These files use the .xl extension and are rarely encountered today. XLS files, on the other hand, are the standard spreadsheet format used by Microsoft Excel from version 97 to 2003. The .xls format is based on the Binary Interchange File Format (BIFF) and is widely supported by many spreadsheet applications.

Why convert xl to xls?

Converting XL files to XLS format ensures better compatibility with modern spreadsheet software, improved data integrity, and easier sharing or editing. Most current applications no longer support the old .xl format, making conversion essential for continued use.

How to convert xl to xls

The best way to convert XL files to XLS is to use Microsoft Excel itself, as it offers the highest compatibility and preserves formatting and data. Here’s how you can do it:

• Open Microsoft Excel.
• Go to File → Open and select your .xl file.
• Once the file is open, go to File → Save As.
• In the Save as type dropdown, select Excel 97-2003 Workbook (*.xls).
• Click Save.

Alternative software and converters

If you do not have access to Microsoft Excel, you can try using LibreOffice Calc or OpenOffice Calc. These free office suites can open many legacy Excel formats and allow you to save them as .xls files:

• Open LibreOffice Calc or OpenOffice Calc.
• Go to File → Open and select your .xl file.
• After the file loads, go to File → Save As.
• Choose Microsoft Excel 97/2000/XP (.xls) as the file type.
• Click Save.

Online converters are generally not recommended for XL files due to their rarity and potential compatibility issues.

Summary

To convert XL files to XLS, use Microsoft Excel for the best results. LibreOffice Calc and OpenOffice Calc are reliable free alternatives. This conversion ensures your spreadsheet data remains accessible and editable in modern environments.