Document Format Comparison

DOCX vs ODT: Microsoft Word vs Open Document Format

Both DOCX and ODT are ISO standards and both are 'open formats' — but their practical situations differ. DOCX is the world's dominant document format because Microsoft Office is the dominant office suite. ODT is the native format of LibreOffice (free, open-source) and was designed to be the open alternative to Microsoft's proprietary format.

DOCXvsODT

Quick Verdict

Use DOCX when…

Use DOCX for sharing with people who use Microsoft Word (the majority). DOCX is more widely supported and better renders in mixed environments.

Use ODT when…

Use ODT within LibreOffice or open-source office workflows, or when you need a fully open format with no Microsoft dependencies.

DOCX vs ODT: Feature Comparison

Feature	DOCX	ODT
Microsoft Word	Native format	Opens with conversion
LibreOffice	Opens with conversion	Native format
Google Docs	Import/Export	Import/Export (less common)
Market adoption	Dominant worldwide	Minority share
Open standard	OOXML (ISO standard, Microsoft-driven)	ODF (ISO standard, community-driven)
Format fidelity in LibreOffice	Some features may not render	Native — perfect rendering

When DOCX wins

✓Microsoft Word: Native format
✓LibreOffice: Opens with conversion
✓Google Docs: Import/Export

When ODT wins

✓Microsoft Word: Opens with conversion
✓LibreOffice: Native format
✓Google Docs: Import/Export (less common)

Frequently asked questions

Can LibreOffice save as DOCX?

Yes — LibreOffice Impress, Writer, and Calc can all save in Microsoft Office formats (DOCX, XLSX, PPTX) by default or via Save As. This is the recommended approach when sharing documents with people who use Microsoft Office.

Is ODT or DOCX better for long-term archiving?

Both are ISO standards, but ODT (ODF) is generally considered better for long-term archiving because it's a community-driven open standard not controlled by a single company. DOCX contains many proprietary Microsoft extensions that may not be fully supported outside of Microsoft products. For archival: ODT or PDF/A are both recommended.