Convert EPUB to MOBI Online
Upload your EPUB file and get MOBI for Kindle
Drop your EPUB file here
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Supports .epub files up to 50MB
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Why Convert EPUB to MOBI?
EPUB is the most popular open ebook format, but Kindle devices don't natively support it. Here's why you might need to convert:
Older Kindle Support
MOBI works on all Kindle devices, including older models like Kindle 3, 4, and basic Kindle.
Send to Kindle
MOBI files can be easily sent to Kindle via email or USB transfer.
Preserve Formatting
Our converter maintains the original layout, images, and table of contents.
No Software Needed
Convert directly in your browser - no Calibre or other software required.
EPUB vs MOBI: Which Should You Use?
| Feature | EPUB | MOBI |
|---|---|---|
| Standard | Open (IDPF/W3C) | Amazon Proprietary |
| Kindle Support | Limited (newer models only) | All Kindle devices |
| Other E-readers | Kobo, Nook, Apple, etc. | Kindle only |
| File Size | Smaller (better compression) | Larger |
| Future-proof | Yes | Being phased out by Amazon |
Note: Amazon now recommends AZW3 or KFX over MOBI for newer Kindles. However, MOBI remains the best choice for maximum compatibility with older devices.
Frequently Asked Questions
Should I use MOBI or AZW3 for Kindle?
For older Kindles (pre-2012), use MOBI. For newer Kindles, AZW3 offers better typography. Our tool can convert to both formats.
Will I lose images or formatting?
No, our converter preserves all images, formatting, and table of contents. Complex CSS layouts may be slightly simplified.
How do I send MOBI to my Kindle?
Email the MOBI file to your Kindle email address (found in Kindle settings), or connect your Kindle via USB and copy to the "documents" folder.
Is this better than using Calibre?
For quick conversions, our online tool is faster and requires no installation. For batch processing or advanced customization, Calibre offers more options.
Other Popular Conversions
EPUB to PDF
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MOBI to EPUB
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KFX to EPUB
Convert newer Kindle format to EPUB
EPUB to AZW3
Convert to Amazon's newer format