Can I open XLS files without Microsoft Excel?

Yes. Our online XLS viewer allows you to open and view legacy Excel 97-2003 files directly in your browser without installing Microsoft Excel or Office.

What is the difference between XLS and XLSX?

XLS is the legacy binary format used by Excel 97-2003, limited to 65,536 rows. XLSX is the modern XML-based format from Excel 2007+ supporting over 1 million rows.

Does it work on mobile devices?

Yes. You can view XLS files on Android phones, iPhones, and tablets using any modern web browser.

Can I convert XLS to XLSX?

Yes. After viewing your XLS file, you can export or convert it to the modern XLSX format for better compatibility.

Is it safe to upload old Excel files?

Yes. Files are processed securely and automatically deleted after viewing. We do not store or share your spreadsheets.

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Online XLS Viewer - Open Legacy Excel Files in Your Browser

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