DOC to DOCX Converter
Convert DOC to DOCX online for free. Fast, secure doc to docx conversion with no watermark, no sign-up and no software to install.
In-browser conversion coming soon
This particular conversion needs more processing than your browser can do today. It's on our list — meanwhile, our image, PDF, OCR and unit tools work instantly and privately right here.
About DOC to DOCX
Convert Microsoft Word 97-2003 (DOC) files to Microsoft Word Document (DOCX) in seconds. The legacy Microsoft Word document format. DOCX is the modern Microsoft Word document format. Our free doc to docx converter is fast, private and requires no account.
How to use DOC to DOCX
- 1Upload your file by dragging it into the box above or clicking to browse — files up to 100MB are supported.
- 2The DOC to DOCX conversion starts automatically and runs securely in your browser, so your files never leave your device.
- 3Preview the result, then click Download to save the converted file.
Frequently Asked Questions
How do I convert DOC to DOCX?+
Upload your DOC file, wait for the automatic DOC to DOCX conversion to finish, then download the new DOCX file. No account or software install is required.
Is the DOC to DOCX converter free?+
Yes. Smart Converter Pro is completely free with no sign-up, no watermarks and no limits on the number of conversions.
Will converting DOC to DOCX reduce quality?+
We use high-quality encoders to keep your DOCX output looking as close to the original DOC as possible.
Are my files safe?+
Absolutely. Conversions happen privately and any files handled on our servers are automatically deleted shortly after processing.
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