MultiConverter
About Us
Contact Us
Loading...
0%
Home
XLS to XLSX Converter
XLS to XLSX Converter
Upload your old Excel (.xls) file to convert it into a modern .xlsx format.
Select XLS File:
Convert to XLSX
Related Tools
XLS to CSV
XLS to JSON
XLS to XML
XLSX to CSV
XLSX to ODS
XLSX To JSON
Frequently Asked Questions
Why convert XLS to XLSX?
XLSX is the modern Excel format with better performance, larger row limits (1,048,576 vs 65,536), and improved compatibility with current software.
Will all my data and formulas be preserved?
Yes. Data, formulas, charts, and formatting are all preserved in the XLSX output.
Can I open the XLS-to-XLSX output in Google Sheets?
Yes. Google Sheets can open XLSX files directly.
Can I open the XLS-to-XLSX output in Excel Online?
Yes. Upload the XLSX file to OneDrive or SharePoint and open it in Excel for the web.
Will charts from the XLS be preserved in XLSX?
Yes. Charts are converted to their XLSX equivalents.
Can I open the XLS-to-XLSX output in LibreOffice Calc?
Yes. LibreOffice Calc can open XLSX files directly.
What is the row limit in XLSX compared to XLS?
XLS supports up to 65,536 rows. XLSX supports up to 1,048,576 rows. Converting to XLSX removes this limitation.