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Convert DOC to DOCX
Convert DOC to DOCX format — 100% browser-based, no upload required.
2 cores · low tier
This conversion is experimental and may not produce perfect results.
Drop a file here or click to select
Format will be auto-detected
About these formats
Source
DOC
Microsoft Word 97-2003Legacy Microsoft Word binary format. Still encountered in older documents, largely replaced by DOCX.
Best for
Legacy document compatibilityOlder Office versions
Advantages
- + Legacy compatibility
- + Smaller than DOCX
Limitations
- − Outdated format
- − Limited features vs DOCX
- − Binary format
Target
DOCX
Microsoft Word DocumentStandard word processing format from Microsoft Office. Rich formatting, images, tables, and collaboration features.
Best for
Writing & editingBusiness documentsReportsCollaboration
Advantages
- + Rich formatting
- + Track changes
- + Wide software support
- + Templates
Limitations
- − Requires Office software
- − Rendering varies
- − Can contain macros