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What is an XLSB file?

Q&A

An XLSB file bears the extension ‘.xlsb,’ which is the MS Excel Binary File Format.

This file format is a collection of records and structures that specify an Excel workbook content. This content can include unstructured or semi-structured tables of numbers, text, or both numbers and text. It can also contain information such as formulas, external data connections, charts, and images.


So, how is it different from your ordinary XLSX file? XLSB files are saved as plain binary encoded compressed data, which takes less time to save and load.


Microsoft Excel is the software to use to open this file type. If you convert it to a standard XLS file, then it can be opened in Google Sheets or Gigasheet.


Learn more here:

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