Free Online XLSX to XLSB Converter

Convert XLSX to XLSB online from any device, with a modern browser like Chrome, Firefox.

Aspose.Cells Conversion

  • Supported Documents: XLSX
  • Save as: PDF, XLS, XLSX, XLSM, XLSB, CSV, JPG, HTML, ODS, BMP, PNG, SVG, TIFF, XPS

XLSXMicrosoft Excel Open XML Spreadsheet

XLSX is well-known format for Microsoft Excel documents that was introduced by Microsoft with the release of Microsoft Office 2007. Based on structure organized according to the Open Packaging Conventions as outlined in Part 2 of the OOXML standard ECMA-376, the new format is a zip package that contains a number of XML files. The underlying structure and files can be examined by simply unzipping the .xlsx file.

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XLSBMicrosoft Excel Binary Spreadsheet File

XLSB file format specifies the Excel Binary File Format, which is a collection of records and structures that specify Excel workbook content. The content can include unstructured or semi-structured tables of numbers, text, or both numbers and text, formulas, external data connections, charts and images. Unlike XLSX (which is based on Open XML file format), the XLSB represents binary Excel workbook file.

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How to convert a file using Aspose.Cells Conversion App

  • Click inside the file drop area to upload a XLSX file or drag & drop a XLSX file.
  • Your XLSX file will be uploaded and will be converted to required XLSB format.
  • Download link of XLSB file will be available instantly after conversion.
  • You can also send a link to the XLSB file to your email address.
  • Note that file will be deleted from our servers after 24 hours and download links will stop working after this time period.

Fast and Easy Conversion

Upload your document, choose the save format type and click on “Convert” button. You will get the download link as soon as the file is converted.

Convert from Anywhere

It works from all platforms including Windows, Mac, Android and iOS. All files are processed on our servers. No plugin or software installation required for you.

Conversion Quality

Powered by Aspose.Cells. All files are processed using Aspose APIs, which are being used by many Fortune 100 companies across 114 countries.

Other Supported Conversions

You can also convert XLSX into many other file formats. Please see the complete list below.