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HomeXLSM vs XLS
.xlsm
.xls

XLSM vs XLS

Compare Excel Macro-Enabled and Microsoft Excel 97-2003 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

XLS

Microsoft Excel 97-2003

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

.xlsspreadsheet

XLSM vs XLS: Feature Comparison

FeatureXLSMXLS
Full NameExcel Macro-EnabledMicrosoft Excel 97-2003
File Extension.xlsm.xls
Categoryspreadsheetspreadsheet
Free to Convert✓ Yes✓ Yes
Browser Support✓ All Browsers✓ All Browsers
Convert to Each Other✓ Yes✓ Yes

When to Use XLSM vs XLS

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 XLS when you need:

  • •Files in Microsoft Excel 97-2003 format for specific workflows
  • •Optimized spreadsheet format features
  • •Modern format advantages and smaller file sizes

Convert Between Them

XLSM XLSXLS XLSM
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Learn More About These Formats

XLSM Converter XLS Converter

Frequently Asked Questions

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

XLS Converter

Convert from XLS

File Tools

Compress, resize, merge

Convert to XLSM

All sources → XLSM

Convert to XLS

All sources → XLS

Format Statistics

Trends & data 2025

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