XLSB File Type

- The quick facts

What are XLSB files and how to open them

Are you having problems opening an XLSB file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is an XLSB file?

An .XLSB file is an Excel Binary Workbook file.

The .xlsb file format is used in files created by programs that generate documents using spreadsheets and forms like Microsoft Excel. XLSB stands for "Excel Spreadsheet Binary". XLSB are Excel files that are different from .xlsx (a more common form of Excel Workbook) in terms of formatting and speed. XLSB files contain information that is written or encoded in binary format instead of the typical XML format commonly used in other Excel files. Because XLSB files are in binary format, they can be read and written much faster, making them extremely useful for huge spreadsheets. This characteristic of .xlsb also makes the files faster to calculate, encouraging efficient use of memory storage since the size of .xlsb is smaller compared to .xlsx files.

But here is the catch. If you are using older versions of Microsoft Excel, such as the 2003 version or earlier, they do not support .xlsb files. Also, if you are using other spreadsheet applications besides MS Excel, using .xlsb files with them might cause problems that can render the file unreadable.

How to open XLSB files

Important: Different programs may use files with the XLSB file extension for different purposes, so unless you are sure which format your XLSB file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 10 different XLSB openers which you will find listed below.

Last updated: December 15, 2021

Various apps that use files with this extension

These apps are known to open certain types of XLSB files. Remember, different programs may use XLSB files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Microsoft OfficeMicrosoft OfficeUser submitted
TableauTableauUser submitted
Microsoft ExcelMicrosoft ExcelUser submitted
LibreOfficeLibreOfficeUser submitted
Citrix ICA ClientCitrix ICA ClientUser submitted
EIOfficeEIOfficeUser submitted
DaViewDaViewUser submitted
Dell Protected WorkspaceDell Protected WorkspaceUser submitted
Kingsoft OfficeKingsoft OfficeUser submitted
RES Workspace ManagerRES Workspace ManagerUser submitted

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about XLSB file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.