XLS to XLSX
Change XLS to XLSX and keep the quality you need. Free for up to 10 files a day, no sign-up.
XLS
Your files
Drop your .xls files here
or
You can add several files and convert them together.
How to convert XLS to XLSX
Upgrade old .xls Excel files to the modern .xlsx format: smaller files, more rows and better compatibility.
- Drop your XLS file into the box above, or add it from a link.
- XLSX is already selected. Use the settings button next to it to change size, quality or other options.
- Select Convert, then download your XLSX file.
To do this from your own code, call the FileForge API with "output_format": "xlsx".
Good to know
- Data, formulas and formatting are kept.
- Old macros aren't carried over, because .xlsx files can't contain macros.
About the formats
.xls
XLS is the old Excel format used before 2007. It has a smaller row limit and is gradually losing support.
.xlsx
XLSX is the Microsoft Excel workbook format. It keeps formulas, multiple sheets, formatting and charts.
Questions
Are my files private?
Your files are uploaded over HTTPS to a private link only you have. Originals and results are deleted automatically after 24 hours, or straight away when you remove them.