Convert XLS to EXCEL

Understanding xls and excel file formats

XLS is the file extension for spreadsheets created with Microsoft Excel 97-2003. It is a binary file format that stores data, formulas, charts, and formatting. Excel file typically refers to the newer XLSX format, introduced with Excel 2007, which is based on the Open XML standard. XLSX files are more efficient, support larger datasets, and are less prone to corruption compared to XLS.

Why convert xls to excel (xlsx) format?

Converting XLS to XLSX ensures better compatibility with modern spreadsheet software, improved performance, and access to advanced Excel features. XLSX files are also more secure and easier to recover in case of file corruption.

How to convert xls to excel (xlsx)

The most reliable way to convert an XLS file to XLSX is by using Microsoft Excel itself. Here’s how:

• Open your XLS file in Microsoft Excel.
• Go to File → Save As.
• Choose the location where you want to save the file.
• In the Save as type dropdown, select Excel Workbook (*.xlsx).
• Click Save.

Best software for xls to excel conversion

Microsoft Excel is the best and most accurate tool for converting XLS to XLSX. It preserves all formatting, formulas, and embedded objects. For users without Excel, LibreOffice Calc is a free alternative that can open XLS files and save them as XLSX via File → Save As.

Online converters

Several online tools, such as Zamzar and CloudConvert, allow you to upload an XLS file and download the converted XLSX file. These are convenient for quick conversions but may not preserve complex formatting or macros.

Summary

Converting XLS to XLSX is recommended for better compatibility and security. Microsoft Excel offers the most reliable conversion, but free alternatives and online tools are also available for users without access to Excel.