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HomeXLS vs XLSM
.xls
.xlsm

XLS vs XLSM

Compare Microsoft Excel 97-2003 and Excel Macro-Enabled formats — understand the key differences and when to use each

Format Overview

XLS

Microsoft Excel 97-2003

Microsoft Excel 97-2003 (.xls) is a spreadsheet file format.

.xlsspreadsheet

XLSM

Excel Macro-Enabled

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

.xlsmspreadsheet

XLS vs XLSM: Feature Comparison

FeatureXLSXLSM
Full NameMicrosoft Excel 97-2003Excel Macro-Enabled
File Extension.xls.xlsm
Categoryspreadsheetspreadsheet
Free to Convert✓ Yes✓ Yes
Browser Support✓ All Browsers✓ All Browsers
Convert to Each Other✓ Yes✓ Yes

When to Use XLS vs XLSM

Use XLS when you need:

  • •Files in Microsoft Excel 97-2003 format for maximum compatibility
  • •Industry-standard spreadsheet format support
  • •Wide software and platform compatibility

Use XLSM when you need:

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

Convert Between Them

XLS XLSMXLSM XLS
Dosya Seçin

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Maksimum dosya boyutu: 2GB

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Learn More About These Formats

XLS Converter XLSM Converter

Frequently Asked Questions

What is the difference between XLS and XLSM?
XLS (Microsoft Excel 97-2003) and XLSM (Excel Macro-Enabled) are both spreadsheet file formats. XLS files use the .xls extension while XLSM uses .xlsm. They differ in compression, quality, compatibility, and intended use cases.
Can I convert XLS to XLSM for free?
Yes! Convert999 lets you convert XLS to XLSM 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, XLS or XLSM?
It depends on your use case. XLS (Microsoft Excel 97-2003) may be better for certain workflows, while XLSM (Excel Macro-Enabled) 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.

XLS Converter

Convert from XLS

XLSM Converter

Convert from XLSM

File Tools

Compress, resize, merge

Convert to XLS

All sources → XLS

Convert to XLSM

All sources → XLSM

Format Statistics

Trends & data 2025

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