XLSB Converter
Convert XLSB 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 XLSB file?
.xlsb (Excel Binary Workbook) is a binary Excel format that loads and saves large workbooks faster than XLSX.
| Feature | XLSB (Excel Binary Workbook) |
|---|---|
| Multiple sheets | Yes |
| Formulas and formatting | Yes |
| Best for | very large Excel workbooks that must open fast |
| Opens in | Excel and LibreOffice |
XLSB is a spreadsheet format.
Convert XLSB to other formats (7)
Convert other formats to XLSB (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.