Convert XLSB to XLS Online

CONVERT XLSB to XLS 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 XLS 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 XLS and in many other formats
Convert hundreds of spreadsheets in 3 clicks;
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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Have an outdated Microsoft Office 2003?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 XLS?

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

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

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

Cloud Based

Convert XLSB to XLS without installing Excel or a spreadsheet app. Upload the file in your browser and download the XLS on Windows, Mac, or mobile.

Secure

Spreadsheets can contain names, figures, and contact details. Your XLSB upload is encrypted in transit with HTTPS/TLS and processed in data centers with multi-factor access control during the conversion to XLS.

Ease of Use

Convert XLSB to XLS online in seconds. XLSB is Excel's binary workbook that many tools cannot read; this free converter rewrites it as classic XLS that opens everywhere. No software to install, no signup.

Privacy

The contents of your XLSB are never inspected or reused. After the conversion to XLS, both files are deleted automatically from our servers. Privacy Policy.

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 XLS

XLS File

File extension	.XLS
Category	Document File
Description	XLS is the most popular format for storing table data. It is native Microsoft Excel format with data stored in numbered cells that form columns and rows. The top line and left column of each table contains numbering of each cell that can contain either static or dynamic data that is calculated from formulas. XLS features powerful calculation and charts-building options, as well as rich text formatting. XLS is compatible with numerous table editors such as Calc, PlanMaker, OpenOffice, etc.
Associated programs	Microsoft Excel Microsoft Excel Viewer OpenOffice
Developed by	Microsoft
MIME type	application/vnd.ms-excel
Useful links	More detailed information on XLS files

2026-02-06

XLSB files from our reporting tool needed to be shared as XLS — this converter did the job perfectly and the recipients could open them with no issues.

Kwame Asante

2026-04-19

Converted large binary Excel files to XLS format for compatibility with older systems. Data integrity was maintained throughout, even in files with 50,000 rows.

Marta Sánchez

2026-05-08

Fast and accurate XLSB to XLS conversion. We use this in our nightly data export pipeline and it has never produced an error or corrupted output.

Viktor Smirnov

Rating XLSB to XLS

4.7 (118 votes)Rate It

XLSB to XLS Converter — Frequently Asked Questions ▼

Why convert XLSB to XLS?

XLSB stores a workbook in a binary format that is small and fast in Excel but poorly supported elsewhere — many reporting tools, import routines, and older or third-party apps cannot open it. Converting to XLS produces the classic Excel format that opens in virtually any spreadsheet program, so the data is usable wherever you need it, not only inside a current copy of Excel.

Are formulas and formatting kept?

Yes. The converter carries cell values, supported formulas, number formats, and formatting from the XLSB into the XLS workbook. Very new or XLSB-specific features may simplify, but ordinary workbooks — tables, totals, standard formulas — convert faithfully.

What about workbooks with more than 65,536 rows?

XLSB supports up to 1,048,576 rows per sheet, while the classic XLS format is limited to 65,536. Data within the older limit transfers cleanly. If a sheet is larger than that, convert to XLSX instead — it keeps the higher row limit while still being far more compatible than XLSB.

Should I convert to XLS or XLSX?

Choose XLS for maximum compatibility with old software and the broadest range of tools. Choose XLSX if you need the higher row limit or prefer the modern format; both are far more widely supported than XLSB. The online tool offers both as output.

Will multiple sheets be preserved?

Yes. All worksheets in the XLSB workbook are carried into the XLS output, each as its own sheet, so the structure of the workbook is kept intact.

What is the maximum file size online?

The online converter accepts XLSB files up to 50 MB. Because XLSB is highly compressed, that covers large workbooks. For bigger files or to convert a whole folder at once, use the desktop Total Excel Converter — no size limit and full batch support.

How do I convert many XLSB files at once?

The online tool converts one file at a time. For batch work use the desktop Total Excel Converter: TotalExcelConverter.exe C:\Workbooks\*.xlsb /Xls /out C:\Excel\. Point it at a folder to convert every workbook in one run.

Convert XLSB to XLS Online — Make a Binary Workbook Open Everywhere

XLSB stores an Excel workbook in a compact binary form. It is fast and small, but not every program reads it — many importers, reporting tools, and older or third-party spreadsheet apps choke on the binary format. Converting XLSB to XLS turns the workbook into the widely supported legacy Excel format that opens in practically any spreadsheet application, so the data is accessible wherever you need it without requiring a current copy of Excel.

What Is an XLSB File?

XLSB is the Excel Binary Workbook format, introduced with Excel 2007 alongside XLSX. It holds the same content — multiple sheets, formulas, charts, and formatting — but stores it as binary records (the BIFF12 structure) instead of the zipped XML used by XLSX. That makes XLSB smaller on disk and faster to open and save for very large workbooks. The trade-off is compatibility: because the data is binary, tools that happily read XLSX often cannot open XLSB.

Developed by: Microsoft (Excel 2007+)
Structure: Binary records (BIFF12), not zipped XML
Strength: Smaller files, faster on huge workbooks
Weakness: Limited support outside Excel

Who Needs XLSB to XLS Conversion?

Tool compatibility: Opening a workbook in a reporting, BI, or import tool that reads XLS but not the binary XLSB
Sharing widely: Sending a workbook to recipients whose software may not support XLSB
Legacy systems: Loading data into older applications that expect the classic Excel format
Automated pipelines: Feeding workbooks to scripts and libraries that handle XLS reliably
Archiving: Storing data in a broadly readable format rather than a binary one tied to Excel
Troubleshooting: Getting a usable copy when an XLSB will not open in a non-Excel program

XLSB vs XLS — Key Differences

Property	XLSB (.xlsb)	XLS (.xls)
Introduced	Excel 2007	Excel 97
Storage	Binary records (BIFF12)	Binary records (BIFF8)
Row limit	1,048,576	65,536
File size	Smallest	Larger
Support outside Excel	Limited	Very broad
Best for	Huge workbooks in Excel	Maximum compatibility

How XLSB to XLS Conversion Works

The converter reads the binary BIFF12 records inside the XLSB workbook — cells, values, formulas, and formatting across every sheet — and rewrites them into the classic XLS (BIFF8) structure. Numbers, dates, and text are preserved, and supported formulas carry over. Note that an XLSB can hold more than a million rows per sheet, while XLS is capped at 65,536; data that fits in the older limit transfers cleanly. The result is a standard .xls workbook that opens in Excel, LibreOffice Calc, and almost any other spreadsheet tool.

XLSB to XLS Use Cases

Opening in other software: Reading a binary workbook in a tool that does not support XLSB
Wider sharing: Sending a workbook that any recipient can open
Legacy imports: Loading data into systems built around the classic Excel format
Scripted processing: Handing files to libraries and pipelines that read XLS reliably
Recovery: Getting a usable copy when an XLSB refuses to open elsewhere
Long-term storage: Keeping data in a broadly supported format

Batch Convert XLSB to XLS with Total Excel Converter

The online converter handles one workbook at a time, up to 50 MB. To convert a folder of binary workbooks in a single pass, or to schedule it, use the desktop Total Excel Converter, which reads XLSB natively with no size limit:

TotalExcelConverter.exe C:\Workbooks\*.xlsb /Xls /out C:\Excel\

Switch the flag to /Xlsx for the modern XML format, /Csv to extract plain data, or /Pdf for a fixed report. Running from the command line lets the whole conversion sit in a scheduled .bat script.

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