Convert Microsoft Word (.word) to Mobipocket eBook (.mobi) online for free. Fast, secure document conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .docx file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .mobi file when it's ready.
Converting Microsoft Word documents to MOBI produces e-books in the Mobipocket format that is natively compatible with all Kindle e-reader devices and apps. MOBI was Amazon's primary e-book format before the transition to KF8/AZW3, and it remains the most broadly compatible format across the entire Kindle ecosystem — from the original Kindle (2007) through current models. For authors and publishers targeting Kindle readers specifically, MOBI conversion from Word manuscripts is a critical workflow step.
The conversion transforms Word's page-based layout into MOBI's reflowable content structure. Headings become navigable chapters, body text reflows to fit any screen size, and images are embedded at e-reader-appropriate resolutions. The result is a professionally structured e-book that reads naturally on Kindle's E Ink displays and in the Kindle app across all platforms.
While Amazon now recommends EPUB or KPF for new Kindle publishing, MOBI remains necessary for distributing to readers with older Kindle hardware. The original Kindle, Kindle 2, Kindle DX, and early Kindle Paperwhite models only support MOBI natively. Authors who want to reach the broadest possible Kindle audience — including readers using older devices in developing markets — need MOBI as a distribution format.
MOBI is also the format used for sideloading e-books to Kindle devices via USB. Many readers prefer purchasing DRM-free e-books from independent authors and loading them to their Kindle directly. Converting Word to MOBI enables this direct distribution model without going through Amazon's publishing platform.
The Word document is imported through LibreOffice (for DOC) or parsed directly (for DOCX), then converted through Calibre's ebook-convert engine to MOBI format. Calibre maps Word heading styles to MOBI navigation points, generates a table of contents from the heading hierarchy, and creates a MOBI header with metadata (title, author, language). Images are resized to Kindle-appropriate dimensions (max 1200x1600) and compressed for efficient delivery. The output MOBI file includes both the older Mobipocket record structure and KF8 metadata for dual-compatibility.
Standard Word formatting converts well: headings, bold, italic, lists, images, and basic tables. Complex layouts (multi-column, text boxes, precise positioning) simplify to single-column reflowable text since MOBI does not support fixed layout. Footnotes convert to endnotes in MOBI. Track changes and comments are stripped. The reading experience on Kindle is clean and professional for documents that use Word's built-in styles consistently.
| Device | DOCX | MOBI |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Word to MOBI conversion produces Kindle-native e-books from Word manuscripts, enabling the broadest possible distribution to Kindle devices including older hardware that only supports the MOBI format.
Ασφαλής μεταφορά
Κρυπτογραφημένες μεταφορτώσεις HTTPS
Απόρρητο πρώτα
Τα αρχεία διαγράφονται αυτόματα μετά την επεξεργασία
Χωρίς εγγραφή
Ξεκινήστε τη μετατροπή αμέσως
Λειτουργεί παντού
| No |
Οποιοδήποτε πρόγραμμα περιήγησης, οποιαδήποτε συσκευή
| Χαρακτηριστικό | DOCX | MOBI |
|---|---|---|
| Πλήρες όνομα | Microsoft Word Document | Mobipocket eBook |
| Επέκταση | .docx | .mobi |
| Ιδανικό για | Editable | Kindle compatible |