Free online XLSX to XLSB converter

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

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Aspose.Cells for .NET Aspose.Cells Excel Conversion

 

Aspose Excel converter is a free app to convert Excel format, also you can save the result to PDF, XLS, XLSX, XLSM, XLSB, ODS, CSV, TSV, HTML, JPG, BMP, PNG, EMF, WMF, SVG, TIFF, XPS, MHTML and Markdown. Convert Excel online from Mac OS, Linux, Android, iOs, and anywhere.

If you want to convert programmatically please check Aspose.Cells documentation.

Aspose.Cells

XLSX Microsoft 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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XLSB Microsoft 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 XLSX to XLSB

  • Click inside the file drop area to upload XLSX files or drag & drop XLSX files.
  • You can upload maximum 10 files for the operation.
  • Your XLSX files will be uploaded and will be converted to XLSB format.
  • Download link of XLSB files will be available instantly after conversion.
  • You can also send a link to the XLSX 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.

Other Supported Conversions

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