XLS Converter
Convert XLS files to and from other formats right in your browser. Free, private and with no upload.
Drag and drop your files here
or click to browse local files (large files supported, limited only by browser RAM)
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What is a XLS file?
.xls (Excel 97-2003 Workbook) is the legacy binary Microsoft Excel format (BIFF8), still common in older systems.
| Feature | XLS (Excel 97-2003 Workbook) |
|---|---|
| Multiple sheets | Yes |
| Formulas and formatting | Yes |
| Best for | compatibility with Excel 97–2003 and legacy systems |
| Opens in | Excel, LibreOffice and Google Sheets |
XLS is a spreadsheet format.
Convert XLS to other formats (7)
Convert other formats to XLS (8)
Why convert here
- Your files never leave your device: conversion runs locally with WebAssembly.
- No sign-up, no watermark and no file size limit beyond your browser's memory.
- Batch conversion with parallel workers, plus quality, size and codec settings.
Looking for something else? Browse the full converter directory.