XLSB converter, in your browser.
Convert XLSB files to XLSX, CSV, JSON and ODS, or turn other files into XLSB. Everything on this page is converted in your browser, so your files never leave your device.
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About XLSB
XLSB stores the same workbook as XLSX but in binary records instead of XML, which makes the file smaller and faster to open and save. It is used for huge models and for workbooks that mix a lot of formulas. Few tools outside Office read it.
XLSB is a binary format that many tools and scripts cannot read. XLSB opens quickly in Excel even when the workbook is large.
- Stands for
- Excel Binary Workbook
- Type
- Spreadsheet
- Compression
- ZIP container of binary records
- Introduced
- 2007, by Microsoft
- Opens in
- Excel and LibreOffice; Google Sheets imports it; Numbers does not
- Best for
- Very large workbooks that need to open quickly
- File extension
- .xlsb
- MIME type
- application/vnd.ms-excel.sheet.binary.macroEnabled.12
Questions
How do I open an XLSB file?
XLSB opens in: Excel and LibreOffice; Google Sheets imports it; Numbers does not. If your device or app cannot open it, convert it to XLSX or CSV above.
What can I convert XLSB to?
ToAny converts XLSB to XLSX, CSV, JSON and ODS.
What can I convert to XLSB?
ToAny creates XLSB files from CSV and XLSX.
Are my files uploaded?
No. Every XLSB conversion listed here runs inside your browser. The files stay on your device.
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