XLSX to XLS Converter
Export XLSX values as XLS for compatible data exchange.
Converted in your browser. Your file never leaves your device.
Drop your XLSX files here
or drag and drop · 10 MB per file
How to convert XLSX to XLS
- Choose XLSX files up to 10 MB.
- Open settings to select a worksheet number, or leave it empty for all sheets.
- Review the report and download the XLS file.
Where this file comes from
Excel, Google Sheets, and modern spreadsheet editors save XLSX workbooks as zipped Office XML.
What changes in the conversion
XLS is useful for legacy Excel readers. This tool creates an Excel 97-2003 values-only workbook with up to 256 columns per sheet.
This is a values-only conversion. Formatting, merged cells, charts, images, comments, links, macros, and original metadata are removed. Formulas become saved results, which may be stale; missing results and error cells are rejected. Dates become ISO strings.
Size limits and browser notes
- Accepts .xlsx files up to 10 MB each.
- You can convert several files at once; they download together as one ZIP.
- Everything runs in your browser, so very large files depend on your device's memory.
Runs in a browser worker. Limits: 10 MB input, 100 MB expanded container, 50 worksheets, 50,000 rows, 256 columns, and 100,000 selected cells. Encrypted and damaged files are rejected. Spreadsheet styling and recalculation are not supported.
FAQ
What does XLSX to XLS keep?
XLS is useful for legacy Excel readers. This tool creates an Excel 97-2003 values-only workbook with up to 256 columns per sheet.
Are formulas calculated?
No. Only the last saved formula result is exported. Recalculate and save the file in Excel or LibreOffice before converting.
What happens to multiple worksheets?
Leave the worksheet field empty for all sheets, or enter a sheet number. The output workbook keeps the selected sheets. Hidden sheets are included when all sheets are selected.
Related tools
See every tool on the Spreadsheet & Data Converter page.