How do I open a .XLSB file on Windows or Mac?

You can open .XLSB files using Microsoft Excel, LibreOffice Calc. If you do not have native software installed, you can use OpenAnyFile's free File Identifier or convert .XLSB to a standard format in your browser.

Is a .XLSB file safe to open?

This format carries a safety rating of Medium Risk. XLSB files load faster but can hold macros

Can I convert a .XLSB file to other formats?

Yes! .XLSB can be converted to formats such as .XLSX directly in your web browser.

What should I do if a .XLSB file is corrupted or won't open?

If your .XLSB file displays an invalid header or signature error, check its magic bytes hex header (Varies) using OpenAnyFile's Magic Byte Detector or follow our step-by-step file repair guide.

How do I open .XLSB files?

You can open .XLSB files using Microsoft Excel, LibreOffice Calc.

Documents • MIME: application/vnd.ms-excel.sheet.binary.macroEnabled.12

.XLSB – XLSB File Format

Q: What is a .XLSB file?

A .XLSB file is a XLSB File Format associated with Documents. XLSB is a binary compressed XML workbook format in Microsoft Excel, optimized for ultra-fast loading of massive multi-million row datasets.

XLSB is a binary compressed XML workbook format in Microsoft Excel, optimized for ultra-fast loading of massive multi-million row datasets.

Primary Category Documents

MIME Type application/vnd.ms-excel.sheet.binary.macroEnabled.12

Magic Bytes Signature Varies

Security Risk Rating Medium Risk

Recommended Software to Open .XLSB

Microsoft Excel

windows, mac, linux • Free

LibreOffice Calc

windows, mac, linux • Free