Convert XLS to XLSX
Turn your XLS files into XLSX right in your browser, fast, secure and private.
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How to convert XLS to XLSX?
- 1Add your XLS file by drag and drop.
- 2Choose XLSX as the output format.
- 3Run the conversion and download your XLSX file.
Frequently asked questions
- Is converting XLS to XLSX free?
- Yes, converting XLS → XLSX is free for occasional use, with no sign-up.
- Are my files safe?
- Your files are processed in the European Union via private, time-limited links, then deleted automatically.