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XLSX to XLSB converter

Convert XLSX to XLSB online from any device with a free converter.

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size up to 20 MB

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We have already processed 30 files with total size of 3 Mbytes

About Conversion app

Easily convert your XLSX files online with no registration required. Convert your XLSX documents from Windows, Linux, or macOS. Simply drag and drop your file into the upload form, select the desired output format, and click the convert button. Once the conversion is complete, you can download your XLSB file.

Depending on the XLSX file's size and format, conversion may take a few moments, but most files convert quickly. With advanced features, you can convert password-protected documents and have the results sent to your email.

Convert your XLSX documents anytime, anywhere, on any device—including mobile. Use this conversion app online 24/7—free for basic conversions.

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XLSX

Microsoft Excel Open XML Spreadsheet

XLSX is a widely used file format for spreadsheets, developed by Microsoft as part of the Office Open XML standard, succeeding the older XLS format. It is supported by Microsoft Excel, Google Sheets, LibreOffice Calc, and other spreadsheet applications, ensuring cross-platform compatibility. The format is based on XML and stored in a compressed ZIP container, enabling features like advanced formulas, charts, conditional formatting, and support for large datasets while maintaining smaller file sizes compared to its predecessor.

XLSB

Microsoft Excel Binary Spreadsheet File

XLSB is a binary file format used by Microsoft Excel to store spreadsheet data, offering a more compact and efficient alternative to XML-based formats like XLSX. It is primarily supported by Microsoft Excel and a few third-party tools, such as LibreOffice and Apache POI, though compatibility may vary. The format stores data in a compressed binary structure, enabling faster loading and saving times, and supports advanced Excel features like macros, charts, and complex formulas while maintaining smaller file sizes compared to XML-based formats.

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APIs available

Convert popular document and image file formats in your app. The GroupDocs.Conversion APIs are available for .NET, Java, and many other platforms and languages.

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How it works

How to convert XLSX to XLSB

Step 1
Click inside the file drop area to upload XLSX file or drag & drop XLSX file.
Step 2
Click on Convert button. Your XLSX files will be uploaded and converted to XLSB result format.
Step 3
Download link of result files will be available instantly after conversion.
Step 4
You can also send a link to the XLSB file to your email address.
FAQ

Questions & Answers

Other Supported Conversions

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

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