Drag your .xlsb file or use the browse button.
Select the desired output format from the dropdown list.
Click "Convert" and download your converted file once ready.
Excel Binary Workbook (.xlsb) — a high-performance, binary-encoded workbook format introduced in Office 2007, optimized for faster load/save and reduced file size.
Supports full VBA macros, complex formulas, charts, and external data connections; partially supported by LibreOffice and libraries like pyxlsb for programmatic access.
Encapsulated in an OPC ZIP container, but with worksheets stored as BIFF-like binary streams rather than XML; often chosen for very large or macro-heavy workbooks.
No specific conversions to Excel Binary Spreadsheet are available at the moment.
Drag your file here to to upload.
Up to 250MB
