How to convert DOC to DOCX
1. Upload DOC
Select or drag and drop your DOC file into the converter.
2. Choose DOCX
Select DOCX as your output format. You can process multiple files at once.
3. Download
Click convert and download your new DOCX file instantly.
Format Details
DOC
DOC is the legacy binary file format used by Microsoft Word for the Office 97-2003 era. It stores document content, formatting, images, and metadata in a proprietary binary structure. Although superseded by the modern XML-based DOCX format, DOC remains common in older archives and is supported for import by virtually all modern word processors and office suites.
DOCX
DOCX is the default file format for Microsoft Word documents since Office 2007, built on the Open XML standard developed by Microsoft and standardized by ISO. It stores document content, formatting, images, tables, and metadata in a compressed ZIP archive containing XML files. DOCX is the dominant word processing format worldwide, supported by Microsoft Word, Google Docs, LibreOffice, and virtually all modern office software.
Frequently Asked Questions
How do I convert DOC to DOCX?
Upload your DOC file on Convertek, select DOCX as the output format, then click Convert. Your DOCX file will be ready to download instantly.
Is the DOC to DOCX converter free?
Yes. Converting DOC to DOCX on Convertek is completely free with no watermarks. Fair upload limits apply (typically 30 MB per file).
Is my file kept after conversion?
No. Files are processed temporarily and not stored permanently. Converted downloads are available only in your browser session.
What is the difference between DOC and DOCX?
DOC and DOCX are different file formats with distinct use cases. Converting between them lets you use your file in software or workflows that require the DOCX format.