Documents conversion
Convert DOC to MOBI
Updated Jul 2026
DOC is the older Microsoft Word format, and MOBI is the ebook format older Kindles read. To convert, open the DOC file in a converter and export it as MOBI, which reflows the text to fit an e-reader screen. Doing this on your own computer means the document never has to be uploaded anywhere first.
- Extension
- .doc
- Type
- Documents
- Typically
- Old Word documents
- Metadata
- Carries EXIF
- Extension
- .mobi
- Type
- Ebooks
- Typically
- Older Kindles
Convert DOC to MOBI on your own computer. Nothing uploads.
How to convert DOC to MOBI
- Open Morphjet and drag in the DOC file, or a whole folder of them, to convert several at once.
- Choose MOBI as the output format.
- Convert. The MOBI file is written next to your original, and nothing leaves your machine.
DOC vs MOBI: what actually changes
| DOC | MOBI | |
|---|---|---|
| File size | Moderate, depends on formatting and embedded images | Usually smaller, since MOBI strips most layout formatting |
| Quality | Lossless, exact formatting preserved | Lossless for the text, but page layout doesn't carry over, since MOBI reflows content |
| Editable | Yes, in any word processor | No, MOBI is a reading format, not meant for editing |
| Compatibility | Opens in Word and most word processors | Opens on older Kindle devices and Mobipocket-compatible readers |
| Metadata kept | Yes, author, revision history, comments | Only basic book details like title and author carry over |
When to convert, and when not to
Convert DOC to MOBI when you want to read a document, manuscript, or long report on an older Kindle that doesn't support newer ebook formats.
Keep the DOC file if you still need to edit the text, track changes, or preserve the exact page layout, since MOBI is built for reading, not editing.
Why not just use an online converter?
Old Word documents often carry hidden metadata, the author's name, past editors, revision history, even comments that were never fully deleted. Send that DOC file to an online converter and all of that travels with it to someone else's server. Converting on your own computer means the document, and everything embedded in it, stays put.
Questions
Does converting DOC to MOBI lose any formatting?
Yes, some. The text itself converts without loss, but MOBI reflows content for small e-reader screens, so exact page breaks, columns, and some layout choices don't survive. For plain, text-heavy documents like manuscripts, this barely matters.
Can I still edit the document after converting to MOBI?
Not really. MOBI is a reading format for e-readers, not a word processing format, so you'd need to go back to the original DOC file to make changes.
Will my document's author and revision history carry over?
No. MOBI only keeps basic book-level metadata like title and author. The revision history, comments, and other tracked details in the DOC file are left behind.
Do only old Kindles need MOBI?
Mostly, yes. Newer Kindles have moved on to a different format, but MOBI still works on older devices and on other e-readers that support Mobipocket files.
Can I convert DOC to MOBI without uploading it anywhere?
Yes. A desktop app like Morphjet converts the file locally on your computer, so the document never has to leave your machine or pass through anyone else's server.
Morphjet converts DOC, MOBI, and 1,800+ other formats, all on your machine. Launching this July.