Convert XLSX to XLS
Microsoft Excel Spreadsheet → Microsoft Excel 97-2003 Spreadsheet
Why Convert This conversion?
Convert to XLS format for compatibility with Excel 2003 and earlier, or legacy business systems.
Best Online XLSX to XLS Converters
Free online converters work in your browser with no software installation required:
- CloudConvert - Fast and reliable converter
- Zamzar - Fast and reliable converter
- FreeConvert - Fast and reliable converter
- Convertio - Fast and reliable converter
Desktop Software for The conversion
Desktop applications offer more control, faster processing, and work offline:
| Software | Platform | Features | Price |
|---|---|---|---|
| Microsoft Excel | Windows/Mac | Best compatibility for XLS/XLSX files | Paid |
| LibreOffice Calc | All platforms | Free alternative with good format support | Free |
| Google Sheets | Web-based | Free web-based spreadsheet editor | Free |
| WPS Spreadsheets | All platforms | Free Excel alternative | Free |
Conversion Tips
- XLS has row limit of 65,536 (XLSX: 1 million+)
- Some modern features won't convert
- XLS files are larger than XLSX
- Only needed for very old Excel versions
Step-by-Step Conversion Guide
- Choose your tool: Select an online converter for quick one-time conversions, or install desktop software for batch processing
- Upload your file: Click upload or drag your XLSX file into the converter
- Adjust settings: Configure quality, resolution, or other options as needed
- Convert: Click the convert button and wait for processing to complete
- Download: Save your new XLS file to your device