XLSX to XLS Converter
Convert modern Excel (.xlsx) files to legacy Excel 97-2003 (.xls) format for compatibility with older systems.
Drop your file here or click to upload
Supports .xlsx
How to Convert XLSX to XLS
- Upload your XLSX file - Drag and drop or click to browse.
- Wait for conversion - Our tool processes your file instantly.
- Download - Click the download button to save your XLS file.
About XLS Format
The XLS format (Excel 97-2003) is a binary file format used by older versions of Microsoft Excel. While XLSX is the modern standard, some legacy systems still require XLS files for compatibility.