Documents conversion
Convert DOCX to AZW3
Updated Jul 2026
DOCX is the format Word documents are saved in, and AZW3 is the Kindle Format 8 ebook format that Kindle devices and apps read. To convert DOCX to AZW3, open the file in a converter and export it as AZW3. Doing this on your own computer keeps the document, and anything in it, off other people's servers.
- Extension
- .docx
- Type
- Documents
- Typically
- Word documents
- Metadata
- Carries EXIF
- Extension
- .azw3
- Type
- Ebooks
- Typically
- Kindle
Convert DOCX to AZW3 on your own computer. Nothing uploads.
How to convert DOCX to AZW3
- Open Morphjet and drag in the DOCX file you want to convert, or a whole folder of them at once.
- Choose AZW3 as the output format.
- Convert. The AZW3 file is written next to your original, ready to load onto a Kindle, and nothing leaves your machine.
DOCX vs AZW3: what actually changes
| DOCX | AZW3 | |
|---|---|---|
| Opens on Kindle devices | No, Kindle can't open DOCX directly | Yes, native Kindle format |
| Reflows to fit the screen | No, fixed page layout | Yes, text reflows like an ebook |
| Editable | Yes, fully editable in Word | No, built for reading, not editing |
| Complex formatting (tables, columns, headers) | Preserved exactly | Simplified so text can reflow |
| File size | Larger with heavy formatting or images | Usually smaller, ebook compression |
| Keeps author and comments (metadata) | Yes, including revision history and comments | No, dropped during conversion |
When to convert, and when not to
Convert DOCX to AZW3 when you want to read a long document, manuscript, or report on a Kindle, since the text reflows to fit the screen and whatever font size you pick.
Keep the DOCX if you still need to edit the document, track changes, or preserve exact page layout and tables, since AZW3 is built for reading, not editing.
Why not just use an online converter?
Word documents carry metadata you might not think about, like the author's name, the computer it was written on, and sometimes a full history of comments and tracked changes. Send that file to an online converter and all of that travels to their servers along with the text. Converting on your own computer means the document, and whatever is buried in its metadata, never leaves your machine.
Questions
Does converting DOCX to AZW3 lose formatting?
Simple text and headings carry over cleanly. Complex layouts, like multi-column pages, tables, or precise headers and footers, get simplified so the text can reflow on a Kindle screen.
Can I still edit the file after converting to AZW3?
Not really. AZW3 is built for reading, not editing, so once you convert, treat the DOCX as the working copy and the AZW3 as the reading copy.
Will the AZW3 keep the author name and comments from the Word file?
No. Ebook readers don't use that kind of metadata, so the author info, comments, and any tracked changes in the DOCX are dropped when it converts to AZW3.
Can I convert DOCX to AZW3 without uploading it anywhere?
Yes. A desktop app like Morphjet converts the file directly on your computer, so the document never has to leave your machine or pass through someone else's server.
Morphjet converts DOCX, AZW3, and 1,800+ other formats, all on your machine. Launching this July.