XLSB File Extension

XLSB file icon
Excel Binary Spreadsheet
  • Developer
  • Popularity
    3.5 (9 votes)

What is XLSB file?

Documents in the XLSB format are binary files of a spreadsheet , generated by the Microsoft Excel 2007 program or newer. XLSB files contain data of a spreadsheet, which is a collection of cells based on the structure of columns and lines. The cells may contain text, images, charts, macros or formulas.

Creation of XLSB format

XLSB is a new format introduced along with Microsoft Excel 2007, which substitutes the previous, less efficient version – the XLS format. The new format is supposed to facilitate working with spreadsheets. It may be opened also by versions of Microsoft Excel older than 2007, howere certain problems may occur in such cases, like loss of certain functionalities.


XLSX files are based on the XML structure and compressed using the ZIP compression method, and the XLSB files are uncompressed binary files. XLSB files contain data in a binary format, not XML, the processes of reading and storing takes much less time which is important especially in case of working with very large documents. Another advantage of the XLSB format is providing support for longer formulas, because it supports formulas longer than 8192 signs.


XLSB files may contain macros which are scripts which will be executed on the device of person who will open the file. Therefore they are often used by Internet criminals. Special caution should be maintained while opening XLSB files received from unknown sources, so that our PC remain not infected with any viruses.

Programs that support XLSB file

Conversion of a XLSB file

When you install one of the applications from the list of programs that you found here, you should be able to open or edit the file with the XLSB extension without any issue. However, if you still have problems with this, you may use the option of XLSB file conversion to a different format.

File Conversions from XLSB extension to a different format
File conversions from other format to XLSB file

We hope we helped you solve the problem with the XLSB file. If you do not know where you can download the application from our list, click on the link (which is the name of the program) - you will find more information there on the location where to download the secure setup version of the required application.

What else may cause problems?

There can be more reasons which determine that you are not able to open the XLSB file (apart from the lack of the proper application installed).

First - the XLSB file may be incorrectly associated with the application installed to support it. In this case, you need to change this association by yourself. To do this, right-click on the XLSB file that you want to edit, click "Open with" and then select the program from the list that you have installed. After this operation, the problems with opening the XLSB file should be solved.

Second - the file you want to open can simply be damaged. Then, the best solution is to find a new version of given file, or download it again from the same source as before (maybe for some reason in the previous session the download of the XLSB file has not been completed and it cannot be opened properly).

Do you want to help?

If you have additional information about the XLSB file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on XLSB file.

Top File Extensions
Show more
File Extension of the day
fb2 icon


FictionBook 2.0 Format

Files with the FB2 extension (Fiction Book 2.0) are eBook files, supported by various reading devices. The format is based on XML, but unlike the E...