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What is DOCX? Microsoft Word File Format Explained

July 3, 2026  ·  3 min read  ·  Fourmeld Blog

DOCX is the default Microsoft Word format since 2007. It replaced the older DOC format and is used for all Word documents created on modern systems.

What is DOCX? DOCX is the default Microsoft Word format since 2007. It replaced the older DOC format and is used for all Word documents created on modern systems.

Key facts about DOCX

Tips

FAQs

How do I open a DOCX file?

Most DOCX files open in standard apps — but if you're stuck, convert to a more universal format using Fourmeld.

How do I convert DOCX to another format?

Go to fourmeld.com/files, upload your DOCX file and choose the output format. Free, no signup.

Is DOCX better than JPG/MP4/PDF?

Each format has specific strengths. DOCX is better for its target use case — see the comparison articles for details.

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