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HomeXLSM vs XLSB
.xlsm
.xlsb

XLSM vs XLSB

Compare Excel Macro-Enabled and Excel Binary Workbook formats — understand the key differences and when to use each

Format Overview

XLSM

Excel Macro-Enabled

Excel Macro-Enabled (.xlsm) is a spreadsheet file format.

.xlsmspreadsheet

XLSB

Excel Binary Workbook

Excel Binary Workbook (.xlsb) is a spreadsheet file format.

.xlsbspreadsheet

XLSM vs XLSB: Feature Comparison

FeatureXLSMXLSB
Full NameExcel Macro-EnabledExcel Binary Workbook
File Extension.xlsm.xlsb
Categoryspreadsheetspreadsheet
Free to Convert✓ Yes✓ Yes
Browser Support✓ All Browsers✓ All Browsers
Convert to Each Other✓ Yes✓ Yes

When to Use XLSM vs XLSB

Use XLSM when you need:

  • •Files in Excel Macro-Enabled format for maximum compatibility
  • •Industry-standard spreadsheet format support
  • •Wide software and platform compatibility

Use XLSB when you need:

  • •Files in Excel Binary Workbook format for specific workflows
  • •Optimized spreadsheet format features
  • •Modern format advantages and smaller file sizes

Convert Between Them

XLSM XLSBXLSB XLSM
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Learn More About These Formats

XLSM Converter XLSB Converter

Frequently Asked Questions

What is the difference between XLSM and XLSB?
XLSM (Excel Macro-Enabled) and XLSB (Excel Binary Workbook) are both spreadsheet file formats. XLSM files use the .xlsm extension while XLSB uses .xlsb. They differ in compression, quality, compatibility, and intended use cases.
Can I convert XLSM to XLSB for free?
Yes! Convert999 lets you convert XLSM to XLSB completely free, directly in your browser. No file upload to any server, no registration needed — your files stay private on your device.
Which is better, XLSM or XLSB?
It depends on your use case. XLSM (Excel Macro-Enabled) may be better for certain workflows, while XLSB (Excel Binary Workbook) excels in others. Consider factors like file size, quality, software compatibility, and your specific needs.
Is it safe to convert files on Convert999?
Absolutely. Convert999 processes all files 100% locally in your browser. Your files are never uploaded to any server, ensuring complete privacy and security.

XLSM Converter

Convert from XLSM

XLSB Converter

Convert from XLSB

File Tools

Compress, resize, merge

Convert to XLSM

All sources → XLSM

Convert to XLSB

All sources → XLSB

Format Statistics

Trends & data 2025

More Format Comparisons

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