EPUB to AZW3
Converter
Convert Electronic Publication files to Amazon Kindle Format 8 format quickly and easily. Free, secure, and works in any browser — no installation required.
Your file is ready for conversion
Review the settings below and click Convert to continue.
Congratulation
Successfully converted EPUB to AZW3.
File will be automatically deleted after 8 hours
How To Convert?
Convert your files quickly and securely.
Here's how to get started:
Click on the "Upload" button to select and upload the EPUB file you want to convert. Alternatively, you can drag and drop the file directly onto this page.
Adjust the settings according to your needs, then click the "Convert EPUB" button to start the conversion process.
Click the "Download AZW3" button to get your converted file.
About EPUB to AZW3 Conversion
Convert your EPUB files to AZW3 format quickly and securely. Our converter uses industry-standard tools like Calibre and ImageMagick to ensure high-quality output with preserved formatting, images, and document structure.
The conversion runs on our secure servers with 256-bit SSL encryption. Your files are automatically deleted after processing — we never store or access your content. No account required for basic conversions.
Why convert EPUB to AZW3?
- Make your documents accessible on more devices and platforms
- Share files with people who don't have specialized readers
- Preserve formatting for printing or archival purposes
- Prepare content for text-to-speech listening with our PDF reader
EPUB to AZW3 — Frequently Asked Questions
Everything worth knowing before you convert a EPUB file to AZW3.
Upload your EPUB above, adjust any EPUB-to-AZW3 options you need, and press Convert. The finished AZW3 is ready to download as soon as processing completes — no software to install and no account required.
Yes. EPUB to AZW3 conversion is free with no signup, and there is no watermark on the output. Signing in raises the file size limit and puts your jobs into the priority processing queue.
Guests can convert an EPUB of up to 50 MB into AZW3. Signed-in users get higher ceilings — 200 MB on Core, 350 MB on Plus and 500 MB on Pro — which matters most when the source EPUB is image-heavy or book-length.
Your EPUB upload is encrypted in transit, converted, and then deleted automatically along with the AZW3 output. ReadLoudly does not read, retain long-term, train on, or share the contents of a EPUB file you convert here.
Most EPUB files finish in under 30 seconds. A large, image-heavy or multi-hundred-page EPUB can take a minute or two before the AZW3 is ready — the page updates on its own, so there is no need to refresh or resubmit.
Yes. Open the converted AZW3 in ReadLoudly's AZW3 reader and it can be narrated with 1200+ AI voices across 40+ languages. Going EPUB to AZW3 first is often the whole point — it puts the content into a format the reader handles natively.
No. ReadLoudly runs the EPUB to AZW3 conversion on its own servers with the same industry-standard tooling (Calibre and ImageMagick) you would otherwise install yourself, so it behaves identically on Windows, macOS, Linux, iOS and Android straight from the browser.
More on reading and listening to your documents
Guides and comparisons from the ReadLoudly blog on getting more out of listening to your documents.
With ReadLoudly.com, you can easily upload any PDF document and read.
Once you're done reading or listening to a document, you can easily share.
Share with Ease
Once you're done reading or listening you can easily share.
Multilingual AI Chat
Chat with PDFs, adjust voice, and translate to your language.
No Downloads Required
You don't need to download any software or plugins to use.
Best Quality
Converted files maintain excellent quality and fidelity using industry-standard tools like Calibre and ImageMagick.
High fidelity
Free & Secure
This tool is free and works on any web browser. Files are protected with 256-bit SSL encryption and deleted automatically after a few hours.
Private & safe
Works Anywhere
Our converter runs in the browser so it works on Windows, Mac, Linux and mobile — no installation required.
Cross-platformSimilar Readers
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