Skip to main content
Convert999
格式所有转换器比较使用场景ToolsBlog
转换器
Convert999

支持400多种格式的免费在线文件转换器。快速、安全、私密。

产品

  • 所有转换器
  • 格式
  • 比较
  • 使用场景
  • Tools

资源

  • 关于
  • Blog
  • Security
  • Glossary
  • Statistics
  • Changelog
  • Contact

法律

  • 隐私政策
  • 服务条款

© 2026 Convert999。保留所有权利。

Made with for the web

HomeHTM vs DOCX
.htm
.docx

HTM vs DOCX

Compare HyperText Markup Language and Microsoft Word formats — understand the key differences and when to use each

Format Overview

HTM

HyperText Markup Language

HyperText Markup Language (.htm) is a document file format.

.htmdocument

DOCX

Microsoft Word

DOCX is the modern Microsoft Word document format, introduced with Office 2007 and based on the Office Open XML (OOXML) standard (ISO/IEC 29500). Internally, a DOCX file is a ZIP archive containing XML files that define content, styles, relationships, and metadata. DOCX supports rich text formatting, styles and themes, tables, images, charts, SmartArt, mathematical equations, content controls, tracked changes, comments, headers/footers, footnotes, and bibliographies. The XML-based structure makes DOCX files smaller than DOC, more reliable for cross-platform use, and easier to process programmatically. DOCX is the standard document format for business, education, and publishing. It's natively supported by Microsoft Word, Google Docs, LibreOffice, and Apple Pages.

.docxdocument

HTM vs DOCX: Feature Comparison

FeatureHTMDOCX
Full NameHyperText Markup LanguageMicrosoft Word
File Extension.htm.docx
Categorydocumentdocument
Free to Convert✓ Yes✓ Yes
Browser Support✓ All Browsers✓ All Browsers
Convert to Each Other✓ Yes✓ Yes

When to Use HTM vs DOCX

Use HTM when you need:

  • •Files in HyperText Markup Language format for maximum compatibility
  • •Industry-standard document format support
  • •Wide software and platform compatibility

Use DOCX when you need:

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

Convert Between Them

HTM DOCXDOCX HTM
选择文件

或将文件拖放到此处

最大文件大小:2GB

您的文件在浏览器中本地处理,不会上传到任何服务器。

Learn More About These Formats

HTM Converter DOCX Converter

Frequently Asked Questions

What is the difference between HTM and DOCX?
HTM (HyperText Markup Language) and DOCX (Microsoft Word) are both document file formats. HTM files use the .htm extension while DOCX uses .docx. They differ in compression, quality, compatibility, and intended use cases.
Can I convert HTM to DOCX for free?
Yes! Convert999 lets you convert HTM to DOCX 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, HTM or DOCX?
It depends on your use case. HTM (HyperText Markup Language) may be better for certain workflows, while DOCX (Microsoft Word) 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.

HTM Converter

Convert from HTM

DOCX Converter

Convert from DOCX

File Tools

Compress, resize, merge

Convert to HTM

All sources → HTM

Convert to DOCX

All sources → DOCX

Format Statistics

Trends & data 2025

More Format Comparisons

JPGvsPNGPNGvsWEBPJPGvsWEBPSVGvsPNGHEICvsJPGBMPvsJPGTIFFvsJPGGIFvsPNG