XLS is a file format. Use WORD.to to convert XLS files to and from various other formats.

How do I convert XLS files?

Select the conversion you need from this page, upload your file, click convert, and download your converted file instantly.

Is XLS conversion free?

Yes, our XLS converter is completely free for basic use.

XLS converter

convert XLS to and from various formats

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About XLS

XLS ( Excel spreadsheet) is an older file format used for storing spreadsheet data. Although largely replaced by XLSX, XLS files can still be opened and edited in Excel. They contain tabular data with formulas, charts, and formatting.

Common Uses

Working with legacy Excel documents
Compatibility with older systems
Spreadsheet data storage

XLS conversion FAQ

What exactly is a XLS file?

XLS is the binary file format used by Microsoft Excel 97-2003.

How can I transform XLS files?

Simply upload your file using our drag-and-drop interface or click to browse. Select your desired output format, then click Convert. Your converted file will be ready for download within seconds.

Is the transformation free?

Yes, our converter is completely free for basic use. No registration required.

Will my file quality be preserved during conversion?

We preserve formatting and layout during conversion. Results depend on the source file and target format compatibility.

Can I convert to PDF?

Yes, PDF conversion is one of our most popular features. PDF format preserves your content layout exactly as intended, making it ideal for sharing and archiving.

What is the file size limit?

Free users can transform files up to 100MB. Premium subscribers get unlimited file sizes and priority processing.

Do I need to download any software?

Works directly in your browser. Our converter works entirely online with no downloads required.

Are my files kept private and secure?

Absolutely. Your files are processed securely and automatically deleted from our servers after conversion. We don't read, store, or share your file contents. All transfers use encrypted HTTPS connections.