To convert AZW3 to MOBI, select or drop your .azw3 file above, check that MOBI is chosen as the output, and click Convert. This conversion runs on our server, and your files are deleted 72 hours later.
What is an AZW3 file?
AZW3 – Kindle e-book (AZW3, KF8). AZW3 (also called KF8) is the Kindle e-book format that replaced MOBI. It supports modern layout and fonts.
AZW3 Converter →What is a MOBI file?
MOBI – Mobipocket e-book. MOBI is the e-book format of Mobipocket, once the format of Kindle e-readers. Older Kindles open it; newer ones prefer EPUB or AZW3. Books bought in a store often have DRM, which stops them from being converted.
MOBI Converter →How to convert AZW3 to MOBI
- Click Select File, or drop your .azw3 files anywhere on this page. You can add several at once.
- Check that MOBI is chosen as the output format. On this page it is picked for you.
- Click Convert. When a file has to go to our server, the button says Upload and convert instead.
- Click Download next to each file when it's done.
AZW3 vs MOBI: how they compare
| AZW3 | MOBI | |
|---|---|---|
| Layout | Flowing text | Flowing text |
| Editable | With e-book tools | With e-book tools |
| Created by | Amazon, 2011 | Mobipocket, 2000 |
| Best for | Kindle e-readers | Older Kindle devices |
Good to know
- The AZW3 e-book is converted by calibre. Copy-protected (DRM) e-books cannot be converted: ConvertKitty does not remove DRM, so use books you have bought without it or that are free of it.
- The MOBI e-book is made by calibre from the text, headings and pictures of the AZW3 file; a cover is not created.
Frequently asked questions
Is converting AZW3 to MOBI free?
Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.
Are my AZW3 files uploaded anywhere?
This conversion runs on our server, because reading an AZW3 file needs calibre, which does not run in a browser. Your file is sent over an encrypted connection, and both it and the result are deleted 72 hours after the conversion. The server has no internet access while it works on your file.
How large can the AZW3 file be?
Up to 1 GB per file. This conversion runs on our server, which accepts files up to that size.
Will the MOBI look the same as the AZW3?
The text, chapters and pictures are kept. The look can differ: MOBI readers use their own fonts and page sizes, so page breaks move.
Can I convert several AZW3 files at once?
Yes. Add as many files as you like; they are converted one after another, and each one gets its own Download button.
How long does converting AZW3 to MOBI take?
In our tests a 4 MB novel of 400 chapters took about 44 seconds to become a MOBI file. Most books are far smaller and take a few seconds.
Convert AZW3 to other formats
- AZW3 Converter
- AZW3 to EPUB Converter
- AZW3 to LRF Converter
- AZW3 to OEB Converter
- AZW3 to PDB Converter
- AZW3 to PDF Converter
- AZW3 to RTF Converter
- AZW3 to TXT Converter
Convert other files to MOBI
- Convert to MOBI
- DOCX to MOBI Converter
- PDF to MOBI Converter
- EPUB to MOBI Converter
- ODT to MOBI Converter
- RTF to MOBI Converter
- TXT to MOBI Converter
- HTML to MOBI Converter
- CBZ to MOBI Converter
- FB2 to MOBI Converter
All e-book formats
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