Convert XLSB to XLSX Online

CONVERT XLSB to XLSX ONLINE

1) Upload XLSB file to convert

Drop files here, or Click to select

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Allowed file types: fasta, qif, ofx, iif, srt, ics, excel, ris, bib, ods, xls, xlsx, xlsm, csv, tsv, tab, xlsb, xltx, xlr, pxl, qpw, wb3, wq1, dbf, wk3, 123, mdb, evtx, pages, numbers, sqlite

2) Set converting XLSB to XLSX options

3) Get converted file

DOWNLOAD CONVERTED FILE

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Get Total Excel Converter to convert XLS, XLSX, ODT, XLSM, etc. safely.

Convert Excel Files in Batch!;
Convert XLSB to XLSX and in many other formats
Convert hundreds of spreadsheets in 3 clicks;
Both MS Office and OpenOffice files;
Have a desktop converter that works without Internet;
Keep your files safe, don't send them to the web;
Get more accurate results with the more poweful engine.

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Total Excel Converter

Total Excel Converter supports almost all Excel extensions: XLS, XLSX, XLSM, XLSB, XLT, XLTM, XLTX, XLK, XLW. When the new Office is released, we will add new file types too.

With Total Excel Converter you can convert Excel to PDF and add a digital signature in one go.

Total Excel Converter can convert each page of your spreadsheet into a separate file.

Tell Total Excel Converter to copy original time stamps if you don't want to change the date.

Have an outdated Microsoft Office 2003? Update all your old files to the new format in one go. Convert XLS files to XLSX in batches.

Total Excel Converter will help you to convert Excel 2003 XML Files (rare option!)

Total Excel Converter has a built-in renamer to give your files new descriptive names. Include a counter, a date or worksheet name into the file name and your files will be in perfect order.

Convert Excel spread sheets via our most straightforward interface.

The widest list of output file types: DOC, PDF, HTML, MHT, XHTML, CSV, TXT, TIFF, JPEG, SVG, RTF, XML, XLS, XLSX, ODS, ODT, Lotus, DIFF, SYLK, LATEX, SQL, DBF, Access!

Total Excel Converter can combine several Excel spread sheets into one TIFF or PDF file.

Want to quickly find a file? Total Excel Converter helps you to preview any document you select.

Add your logo or any other image to the header or the footer of the output file.

Want more order? Add page counters or a date to every page of the output files. Sequential numbering of several folders is avaialble.

Total Excel Converter can copy original time stamps if you want to keep them.

When you convert Excel to PDF you can set user permissions, password-protect your files or sign with a digital signature. Get PDF, PDF/A and non-searchable PDFs.

Total Excel Converter can be run via command line (get the ready-to-use command line from GUI).

How to convert XLSB to XLSX?

💾 Upload Your File: Go to the site, click on «Upload File,» and select your XLSB file.

✍️ Set Conversion Options: Choose XLSX as the output format and adjust any additional options if needed.

Convert and Download: Click 👉«Download Converted File»👈 to get your XLSX file.

Cloud Based

There is no need to install any software to convert XLSB to XLSX with CoolUtils. Simply access the internet, and you can easily convert your file online with our service.

Secure

Our hardware operates in top-tier, highly secure data centers equipped with advanced electronic surveillance and multi-factor access control systems.

Ease of Use

Converting XLSB to XLSX online has never been so simple. Drop your Excel binary workbook and the converter produces a standard XLSX file — data, formulas, and formatting preserved, fully compatible with Excel Online, LibreOffice Calc, and Google Sheets. XLSB cannot be opened by these tools without conversion. No Excel required.

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XLSB File

File extension	.XLSB
Category	Document File
Description	The XLSB format is a binary file format used by Microsoft Excel to store spreadsheet data. Unlike the more common XLSX format, which uses XML to represent spreadsheet data, the XLSB format stores data in binary form, resulting in smaller file sizes and faster access times. The XLSB format was introduced with Excel 2007 and has since become a popular choice for users who work with large or complex spreadsheets. Because the format uses binary encoding, it is more efficient at storing large amounts of data than the XML-based XLSX format. This can be particularly beneficial for spreadsheets that contain many rows or columns, or that require complex calculations. In addition to its smaller file size and faster access times, the XLSB format also provides enhanced security features compared to the XLSX format. Because the data is stored in binary form, it is more difficult for unauthorized users to access or modify the data directly. This can be particularly important for users who work with sensitive or confidential data, such as financial or healthcare information. Despite its advantages, there are some limitations to using the XLSB format. Because the format is binary, it cannot be easily edited or modified using a text editor or other software tools. In addition, some third-party software may not be compatible with the XLSB format, which can limit its usefulness in certain situations. Overall, the XLSB format is a powerful and efficient way to store and manage spreadsheet data in Microsoft Excel. Its smaller file sizes, faster access times, and enhanced security features make it an attractive choice for users who need to work with large or complex spreadsheets.
Associated programs	Total Excel Converter
Developed by
MIME type
Useful links
Conversion type	XLSB to XLSX

XLSX File

File extension	.XLSX, .EXCEL
Category	Document File
Description	XLSX is a format from Office Open XML family, a native MS Excel file type starting from version 2007. As opposite to XLS, this format uses ZIP compression that makes XLSX files smaller in size. Actually XLSX file is an archive of XML-documents. The cells in XLSX table can contain plain text, formulas or graphic elements. XLSX can be read in MS Office 2007 and later, Universal Viewer, OpenOffice, MS Office Excel Viewer, Corel WordPerfect Office. This format doesn’t support macros.
Associated programs	Microsoft Excel 2007 OpenOffice OxygenOffice Progessional (Linux)
Developed by	Microsoft
MIME type
Useful links	More detailed information on XLSX files

2026-01-30

Our BI tool doesn't support XLSB format. Converting the binary Excel files to standard XLSX made them importable without any data loss.

Pieter van den Berg

2026-03-19

Received large XLSB workbooks from a partner but only have LibreOffice — converted to XLSX and opened them without issues.

Amara Diallo

2026-05-06

XLSB files were coming out of our reporting system and no one outside the team could open them. Batch converting to XLSX solved the compatibility problem instantly.

Wei Zhang

Rating XLSB to XLSX

4.7 (480 votes)Rate It

Convert XLSB to XLSX — Frequently Asked Questions ▼

What is the difference between XLSB and XLSX?

XLSB stores spreadsheet data in a binary format that opens and saves faster for very large files. XLSX stores the same data in an XML text format that is widely compatible with other tools. The functional content — formulas, values, sheet structure — is the same in both formats.

Will Excel formulas be preserved when converting XLSB to XLSX?

Yes. Formulas stored in the XLSB file are preserved in the XLSX output. The formula syntax is the same in both formats, so they recalculate correctly when you open the XLSX in Excel or compatible applications.

Why can't I open my XLSB file in Google Sheets?

Google Sheets only supports the Open XML XLSX format for upload. XLSB's binary format is not supported. Converting to XLSX resolves the compatibility issue.

Does the conversion preserve multiple sheets and named ranges?

Yes. All worksheets in the XLSB workbook are preserved as separate sheets in the XLSX output. Named ranges, defined names, and sheet tab names are also preserved.

Will macros (VBA) in the XLSB file work in the XLSX output?

XLSB can contain VBA macros. XLSX format does not support macros — if your XLSB contains VBA code, the macro-enabled format XLSM would be needed to preserve it. The data and formulas are always preserved regardless.

Is there any data loss when converting XLSB to XLSX?

Cell values, formulas, formatting, and structure are all preserved. Conditional formatting, charts, and pivot tables are also maintained. VBA macros cannot be stored in plain XLSX.

How do I convert a folder of XLSB financial models to XLSX automatically?

Total Excel Converter ($29.90) processes entire directories: TotalExcelConverter.exe C:\xlsb_folder C:\xlsx_output /ConvertTo xlsx /ProcessRecursively. It handles batch conversion from the command line.

Convert XLSB to XLSX Online

Finance professionals and data analysts convert XLSB files to XLSX to make Excel binary workbooks compatible with Google Sheets, LibreOffice, and reporting tools that do not support the binary format.

Broad tool compatibility — XLSX is the standard Open XML format accepted by all modern spreadsheet applications
Google Sheets support — XLSB cannot be imported into Google Sheets; XLSX works natively
LibreOffice ready — LibreOffice Calc opens XLSX fully; XLSB support is limited and unreliable
Preserves data and formulas — cell values, formulas, and sheet structure are retained in the conversion
No Excel required — convert the XLSB file online without opening Excel

What Is XLSB?

XLSB (Excel Binary Workbook) is Excel's binary spreadsheet format that stores data in a compressed binary structure instead of the XML text used by XLSX. XLSB opens and saves significantly faster than XLSX for very large workbooks (500,000+ rows) and is used in performance-critical financial models. However, XLSB is not supported outside of Excel, making it incompatible with Google Sheets, LibreOffice, and most BI tools.

What Is XLSX?

XLSX is the standard Excel workbook format since Office 2007, based on the Open XML specification (ISO 29500). It is supported by every modern spreadsheet application and data tool. XLSX is the required format for importing into Google Sheets, most BI platforms, and third-party integrations. The XML structure makes XLSX easier to inspect, version-control, and process programmatically.

Online Converter vs Desktop Converter

Feature	Online (this page)	Total Excel Converter (desktop)
Batch conversion	✓ Single file	✓ Entire folders, recursive
File size limit	Up to 50 MB	No limit
Automation / scripting	✗	✓ Command-line, .bat, Task Scheduler
Files stay local	✗	✓ No upload required
Price	Free	From $29.90

Batch CLI example: TotalExcelConverter.exe C:\xlsb_files C:\xlsx_output /ConvertTo xlsx /ProcessRecursively

How to Convert XLSB to XLSX

Click Choose File and select your .xlsb file
The format is detected automatically
Select XLSX as the output format
Click Convert — processing takes a few seconds
Click Download to save your XLSX file
Open the XLSX in Excel or Google Sheets to verify formulas and data are intact

When Do You Need XLSB to XLSX?

Google Sheets import — XLSB is incompatible with Google Sheets; XLSX uploads directly
Sharing with LibreOffice users — colleagues on Linux or Mac using LibreOffice require XLSX
BI tool integration — Power BI, Tableau, and other tools typically require Open XML format
Version control — XLSX XML content can be diff'd in Git; XLSB binary changes are opaque
Archiving — XLSX is the ISO-standardized open format for long-term spreadsheet preservation

Feature	Online Converters	CoolUtils Desktop	Excel Built-in	Other Software
Batch Conversion	Limited	✅ Unlimited	Manual only	Limited
File Size Limit	1-5MB	✅ No limits	System dependent	Varies
Privacy & Security	Upload required	✅ 100% offline	✅ Local only	Varies
Conversion Speed	Internet dependent	✅ Fast local processing	Slow	Medium
Advanced Options	Basic	✅ Full customization	Limited	Basic
Cost	Free/Premium	One-time purchase	Requires Office	Subscription
Formatting Preservation	Good	✅ Excellent	Good	Varies
Multiple Formats Support	Limited	✅ 40+ formats	Few formats	Limited