Convert DOC to DOCX Online — Free
Fast, free DOC to DOCX converter. No registration required.
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Supports: DOC files
Max: 100MB (free) · 2GB (Pro)
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How to Convert
Upload your .doc file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .docx file when it's ready.
What is DOC?
DOC is the legacy Microsoft Word format used before Office 2007. While older, it remains common in archived documents and older systems.
Format Details
- Full Name
- Microsoft Word 97-2003
- Extension
- .doc
Key Features
- Legacy support
- Microsoft Office
- Wide compatibility
- Editable
What is DOCX?
DOCX is the modern Microsoft Word format introduced in Office 2007. It's the standard format for editable documents in business and education.
Format Details
- Full Name
- Microsoft Word Document
- Extension
- .docx
Key Features
- Editable
- Microsoft Office
- Rich formatting
- Track changes
DOC vs DOCX
| Feature | DOC | DOCX |
|---|---|---|
| Full Name | Microsoft Word 97-2003 | Microsoft Word Document |
| Extension | .doc | .docx |
| Best For | Legacy support | Editable |