Convert AZW3 to EPUB
Convert AZW3 to EPUB free in your browser. No upload, no signup, no watermark. Files stay on your device.
drop a .azw3 file
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how to convert azw3 to epub
Drop your AZW3 file
Drag your AZW3 file into the drop zone above, or click the box to pick a file from your computer or phone. The browser reads the file directly — nothing uploads.
Click Convert
The page runs foliate-js on your device to decode the Amazon Kindle Format 8 and encode it as Electronic Publication. Most conversions finish in a few seconds; large or codec-heavy files (RAW, video) can take longer.
Download the EPUB file
When the conversion finishes, the EPUB file is ready to download. Save it anywhere on your device.
FAQ
common questions
Will my AZW3 formatting be preserved when converted to EPUB?
Both Amazon Kindle Format 8 and Electronic Publication are reflowable formats. Headings, paragraphs, lists, bold / italic, hyperlinks, basic tables, and embedded images map cleanly between them. Format-specific extras — Word's tracked changes / comments, HTML's inline CSS, ebook navigation manifests — don't have direct equivalents and are dropped during conversion.
Will the EPUB file be smaller or larger than my AZW3?
Roughly the same. The two formats have comparable compression characteristics, so file size doesn't change dramatically — exact ratio depends on content and encoder settings.
When does it make sense to convert AZW3 to EPUB?
Common reasons: AZW3 is DRM-protected versions from the Kindle store cannot be converted without breaking that DRM (out of scope for us), while EPUB is open standard — supported by Apple Books, Kobo, Kindle (since 2022), most e-readers and reading apps. Converting also matters when the app, device, or platform you're sharing with prefers Electronic Publication — Apple Books, Kobo, modern Kindle (Send-to-Kindle now accepts EPUB), every dedicated reader app.
Where will my EPUB file open after conversion?
Apple Books, Kobo, modern Kindle (Send-to-Kindle now accepts EPUB), every dedicated reader app. Electronic Publication is widely enough supported that you can hand the output file to most modern apps and expect them to render it.
Does this site upload my AZW3 files anywhere?
No. The whole conversion runs in your browser using foliate-js. The file you drop in never leaves your device — we don't see it, and we couldn't even if we wanted to.
Is there a file size limit for AZW3 to EPUB?
There's no hard cap — limit is your device's memory. Several hundred megabytes works fine on a typical laptop. Phones and low-RAM machines may struggle with very large files.
Does AZW3 to EPUB work offline?
Once this page has loaded, yes. The converter library lives in your browser and runs without any further network calls. Reloading the page does still need connectivity.