How to convert Kindle (AZW3) to MOBI
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Upload your file
Drag and drop a file or click to select one. Keep this page open while the file uploads and converts.
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Convert Kindle (AZW3) to MOBI
NexMedia converts Kindle (AZW3) to MOBI on its own servers. Processing time depends on the file size and how busy the queue is.
- 3
Download the converted file
When the conversion finishes, the download appears on this page. Your converted file is kept for 2 hours, then deleted.
About Kindle (AZW3)
AZW3, also called KF8, is Amazon's Kindle Format 8, introduced in 2011 with HTML5 and CSS3 formatting.
Kindle ebooks with a richer layout than MOBI; Kindle devices and Calibre read it.
Books bought from Amazon usually carry DRM, and DRM-protected files cannot be converted.
Convert AZW3 to MOBI online free, no account required — MOBI is the Mobipocket ebook format of early Kindles.
Change AZW3 to MOBI without losing quality — convert AZW3 to MOBI free in your browser.
Why won't my Kobo, phone or computer open my AZW3 ebook? Kindle Format 8 is Amazon's proprietary layout, locked to their own readers — converting to EPUB frees the book for every other device.
About MOBI
MOBI is the Mobipocket ebook format, which Amazon acquired in 2005 and used for the first Kindles.
Older Kindle devices and ebook collections from before AZW3.
MOBI supports only basic formatting, and Amazon's Send to Kindle no longer accepts MOBI files.
Why convert an ebook to MOBI? For very old Kindles that predate EPUB support; anything modern reads EPUB or AZW3.
What changes when you convert AZW3 to MOBI
- Ebook conversion is best-effort: the text, images and table of contents of the AZW3 carry over to MOBI, but layout and styling can change.
- Fixed layouts, embedded fonts and complex styling in the AZW3 may not survive the move to MOBI.
- AZW3 files can carry DRM copy protection; protected files are detected and refused, because copy protection is never removed.
Settings you can change
Before you convert AZW3 to MOBI, you can adjust: Title, Author, Language, Page size, Base font size, and Generate table of contents.
Limits
Each plan sets a maximum file size and a number of conversions per day, and video and audio files also have a maximum length. Guests can convert files up to 100 megabytes and 5 per day; a free account raises this to 500 megabytes and 25 per day; paid plans go up to 100 gigabytes.
Your converted MOBI file is kept for 2 hours, then deleted.
AZW3 to MOBI: questions and answers
Does converting AZW3 to MOBI reduce quality?
Ebook conversion is best-effort: the text, images and table of contents of the AZW3 carry over to MOBI, but layout and styling can change.
What is the difference between AZW3 and MOBI?
AZW3 is Amazon's Kindle Format 8 ebook format. MOBI is the Mobipocket ebook format of early Kindles.
Can I change the settings when converting AZW3 to MOBI?
Before you convert AZW3 to MOBI, you can adjust: Title, Author, Language, Page size, Base font size, and Generate table of contents.
Do I need an account to convert AZW3 to MOBI?
No. You can convert AZW3 to MOBI without an account; signing in raises the file-size and daily limits.
How long is my converted MOBI file kept?
The MOBI file you convert from AZW3 is kept for 2 hours, then deleted automatically.
Will the page layout of my AZW3 survive in the MOBI?
Fixed layouts, embedded fonts and complex styling in the AZW3 may not survive the move to MOBI.
What happens if my AZW3 file is copy-protected?
AZW3 files can carry DRM copy protection; protected files are detected and refused, because copy protection is never removed.