DOCX to EPUB Converter
Convert Office Open XML Document (DOCX) to Electronic Publication (EPUB) online for free. Runs 100% in your browser. Files never leave your device. No signup, no watermarks, no limits.
Drag & drop files here, or browse
Processed on your device. Nothing is uploaded
Automate this. An open tab can convert whole folders via the Local API - still zero uploads.
Local API →How to use DOCX to EPUB Converter
- 01Add files
Choose files or drop them here
- 02Settings
Settings · Runs on your device
- 03Download
Processed on your device. Nothing is uploaded
What is a DOCX (Office Open XML Document) file?
DOCX is the default Microsoft Word format since Office 2007. A ZIP of XML files. Converting DOCX to HTML, Markdown or TXT extracts the content for use anywhere.
- Developed by
- Microsoft
- Initial release
- 2007
What is a EPUB (Electronic Publication) file?
EPUB is the open e-book standard used by every major e-reader except Kindle. It is a ZIP of XHTML, CSS and metadata, which makes it friendly to in-browser conversion.
- Developed by
- IDPF / W3C
- Initial release
- 2007
Frequently asked questions
How do I convert DOCX to EPUB?
Click “Choose Files” or drag your DOCX file onto the page, optionally adjust the settings, then hit Convert. Your EPUB file downloads straight from your browser. Nothing is uploaded anywhere.
Is this DOCX to EPUB converter free?
Yes, completely free with no hidden limits, watermarks or signup. Because all processing happens on your own device, there are no server costs to pass on to you.
Are my files uploaded to a server?
No. The conversion engine runs entirely in your web browser using WebAssembly. Your files never leave your device. You can even disconnect from the internet after the page loads and keep converting.
Is there a file size limit?
We impose no fixed limit. The practical ceiling is your device's free memory, since processing happens locally. Most conversions work comfortably with files up to a few hundred megabytes, and image or document conversions handle much more.
Does it work on my phone?
Yes. The converter runs in any modern browser on Windows, macOS, Linux, Android and iOS. No app installation is required.