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HomeXLSM vs XLSX
.xlsm
.xlsx

XLSM vs XLSX

Compare Excel Macro-Enabled and Microsoft Excel 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

XLSX

Microsoft Excel

XLSX is the modern Microsoft Excel spreadsheet format, introduced with Office 2007 as part of the Office Open XML (OOXML) standard. Like DOCX, an XLSX file is a ZIP archive containing XML files. XLSX supports up to 1,048,576 rows and 16,384 columns per sheet, formulas (including array formulas and LAMBDA functions), charts, pivot tables, conditional formatting, data validation, sparklines, named ranges, and VBA macros (as .xlsm). The format supports multiple worksheets, cell styles and themes, embedded images, and extensive number formatting. XLSX is the standard format for business data analysis, financial modeling, reporting, and data management. It's natively supported by Microsoft Excel, Google Sheets, LibreOffice Calc, and Apple Numbers.

.xlsxspreadsheet

XLSM vs XLSX: Feature Comparison

FeatureXLSMXLSX
Full NameExcel Macro-EnabledMicrosoft Excel
File Extension.xlsm.xlsx
Categoryspreadsheetspreadsheet
Free to Convert✓ Yes✓ Yes
Browser Support✓ All Browsers✓ All Browsers
Convert to Each Other✓ Yes✓ Yes

When to Use XLSM vs XLSX

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 XLSX when you need:

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

Convert Between Them

XLSM XLSXXLSX XLSM
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Frequently Asked Questions

What is the difference between XLSM and XLSX?
XLSM (Excel Macro-Enabled) and XLSX (Microsoft Excel) are both spreadsheet file formats. XLSM files use the .xlsm extension while XLSX uses .xlsx. They differ in compression, quality, compatibility, and intended use cases.
Can I convert XLSM to XLSX for free?
Yes! Convert999 lets you convert XLSM to XLSX 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 XLSX?
It depends on your use case. XLSM (Excel Macro-Enabled) may be better for certain workflows, while XLSX (Microsoft Excel) 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

XLSX Converter

Convert from XLSX

File Tools

Compress, resize, merge

Convert to XLSM

All sources → XLSM

Convert to XLSX

All sources → XLSX

Format Statistics

Trends & data 2025

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