Ebook Conversion
Convert MOBI to AZW3 Online — Free
Fast, free MOBI to AZW3 converter. No registration required.
3,715 files converted
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How to Convert
1
Upload your .mobi file by dragging it into the upload area or clicking to browse.
2
Choose your output settings. The default settings work great for most files.
3
Click Convert and download your .azw3 file when it's ready.
What is MOBI?
MOBI is an ebook format used by Amazon Kindle devices. While Amazon now prefers EPUB, MOBI remains compatible with older Kindle models.
Format Details
- Full Name
- Mobipocket eBook
- Extension
- .mobi
Key Features
- Kindle compatible
- DRM support
- Ebook standard
- Amazon format
What is AZW3?
AZW3 (also known as KF8) is Amazon's modern ebook format. It supports enhanced typography and layout features compared to MOBI.
Format Details
- Full Name
- Amazon Kindle Format
- Extension
- .azw3
Key Features
- Kindle native
- Enhanced layout
- Modern features
- Amazon ecosystem
MOBI vs AZW3
| Feature | MOBI | AZW3 |
|---|---|---|
| Full Name | Mobipocket eBook | Amazon Kindle Format |
| Extension | .mobi | .azw3 |
| Best For | Kindle compatible | Kindle native |
Frequently Asked Questions
Yes. Our converter preserves chapter structure, table of contents, and navigation. Formatting, images, and internal links are maintained when both formats support them.
MOBI and AZW3 formats work natively on Kindle devices. EPUB works on Kobo, Nook, and most other e-readers. PDF works universally but isn't reflowable.
We can only convert DRM-free eBooks. If your file has DRM restrictions, you'll need to remove them before conversion. We don't provide DRM removal tools.
Yes. eBook conversion is free — 5 conversions per day without signup, 20 per day with a free account. No watermarks. Pro users get 100/day plus batch processing.
Yes. Upload from any device with a browser — iPhone, Android, tablet, or desktop. No app installation required.