Convert EPUB to AZW3
Free, fast and secure — convert EPUB to AZW3 right in your browser.
EPUB
AZW3
Convert EPUB to AZW3 for wider compatibility
Converting EPUB to AZW3 gives you a more widely supported file that opens cleanly across more devices, apps and platforms — handy when EPUB will not play nicely everywhere.
How to convert EPUB to AZW3
- 1 Drop your EPUB file into the converter above.
- 2 It is converted to AZW3 automatically — no settings to fiddle with.
- 3 Download your new AZW3 file instantly.
EPUB vs AZW3
| Feature | EPUB | AZW3 |
|---|---|---|
| Compression | Lossless | Lossless |
| MIME type | application/epub+zip | application/vnd.amazon.ebook |
| Best for | Novels and long-form reading on e-readers, phones and tablets. | Modern Kindle reading — converted to EPUB for other e-readers. |
About the formats
EPUB
EPUB e-book
EPUB is the open standard for e-books. Its reflowable text adapts to any screen size and reader app, making it ideal for novels and long-form reading on phones, tablets and e-readers.
Strengths
- Reflows to fit any screen
- Adjustable fonts and sizes
- Open standard for e-readers
Limitations
- Not page-exact like PDF
- Weaker for complex layouts
- Needs an e-reader app
Best for: Novels and long-form reading on e-readers, phones and tablets.
AZW3
Kindle AZW3 e-book
AZW3 (KF8) is Amazon’s modern Kindle format. It supports richer styling and layout than MOBI and is the format newer Kindle content uses.
Strengths
- Richer styling than MOBI
- Modern Kindle format
- Good text reflow
Limitations
- Locked to the Kindle ecosystem
- Not opened by most non-Kindle readers
- Often needs converting to EPUB
Best for: Modern Kindle reading — converted to EPUB for other e-readers.
Frequently asked questions
Upload your EPUB file above and it is converted to AZW3 automatically. When it is ready, download your new Kindle AZW3 e-book — the whole thing takes just a few seconds in your browser.
Converting EPUB to AZW3 gives you a more widely supported file that opens cleanly across more devices, apps and platforms — handy when EPUB will not play nicely everywhere.
AZW3 is a lossless format, so your converted file keeps its full quality with no degradation.
Yes. The converter is free to use, with no watermark and no sign-up required.
Your files are processed securely and are never shared with anyone.