EPUB to AZW3 Converter

Free and versatile AZW converter for ebooks. Convert your ebooks and documents to AZW to read them on your Amazon Kindle ebook reader

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A file your Kindle treats as a real book

AZW3, not a PDF you have to pinch at

A Kindle will display a PDF, but it will not reflow it, so the font size is whatever the page was made at. AZW3 gives you adjustable text, working bookmarks, a real table of contents and your place kept between devices.

Tuned to your exact Kindle

Eight device profiles, all of them Kindle: the Paperwhite and Paperwhite 3, the Oasis, the Voyage, the Fire, the DX, the original, and the Scribe. Picking yours sets the page size and margins for that screen.

No install, no account

The whole conversion runs from this page over an encrypted connection, in EU data centres, with no human access. Your files are never used to train AI models.

Converting and sending are two different steps

People often expect one action where there are really two. Converting turns your file into a format the Kindle understands. Delivering puts it on the device. This page does the first; Amazon's own Send to Kindle does the second, and the two work together rather than competing.

Once you have the AZW3, there are two ways to get it across. Email it to your Send-to-Kindle address, which Amazon then delivers to every device on your account. Or plug the Kindle in by USB and copy the file into its documents folder, which needs no account and no internet.

Amazon will accept an EPUB through Send to Kindle these days and convert it on its own servers. Converting first is still worth it when you want control over the result: the right device profile, your own title and author, a set margin and font size, and no dependence on what Amazon's converter decides.

What is AZW, and why does the Kindle want it?

The Amazon Kindle ebook reader series can only open a few file formats. To make sure you can read your ebook on your Kindle, convert it to the Kindle AZW format.

It's easy to convert EPUB to AZW with this online Kindle converter. No need to install software or anything else on your computer. Just convert online and for free from basically any device.

This page produces AZW3, the current version of the format. It replaced MOBI in 2011 and supports richer formatting, so a modern Kindle gets a better result from it. If you have an older device that specifically wants a .mobi file, use the MOBI converter instead.

File extension: .azw3, MIME type: application/x-mobipocket-ebook

AZW on the MobileRead Wiki

Which Kindle do you have?

Eight profiles, all of them Kindle. Picking yours sets the page size and margins for that screen instead of a generic default.

Device Profile Notes
Kindle Paperwhite Kindle Paperwhite, Kindle Paperwhite 3 The most common Kindle. Two generations available
Kindle Oasis Kindle Oasis Larger screen, asymmetric layout
Kindle Scribe Kindle Scribe The large-format writing Kindle
Kindle Voyage Kindle Voyage Discontinued, still widely used
Kindle Fire Kindle Fire The tablet rather than the e-ink reader
Kindle, Kindle DX Kindle, Kindle DX The original and the large-format model

Leave the setting on Default if you are not sure. The file converts either way, it is simply not tuned to one screen.

How to read ebooks on a Kindle

1

Upload

Upload your ebook or document.

2

Adjust

Use the optional settings to edit the author, title, borders, and more.

3

Convert

Click "Start" to convert your file for Kindle.

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Convert for Kindle FAQ

Is this Kindle converter free?

Yes. Everyday conversions are free and need no account: upload the file, press Start and download the AZW3. A subscription only matters for very large files, longer batches and priority processing.

How do I convert EPUB to AZW3?

Upload the EPUB, optionally pick your Kindle model and set the title, author or margins, then press Start. The AZW3 comes back as a download, ready to email or copy across.

How do I get the file onto my Kindle?

Two ways. Email it to your Send-to-Kindle address and Amazon delivers it to every device on your account. Or connect the Kindle by USB and copy the file into its documents folder, which needs no account at all.

Can I convert books I bought from Amazon?

No. Purchased Kindle books carry DRM, and no application can remove it. This works on files you already hold without that protection, such as your own documents or books from a DRM-free store.

Why not just send the PDF straight to my Kindle?

You can, but a PDF keeps fixed pages, so the text will not reflow and you cannot change the font size. On a six-inch screen that usually means pinching and scrolling. Converting first gives you a real ebook.

Amazon accepts EPUB now. Why convert at all?

Because converting yourself gives you control over the result: the right device profile, your own title and author, a set margin and base font size, and a file that does not depend on what Amazon's own converter decides to do with it.

AZW3 or MOBI, which one do I want?

AZW3 for a current Kindle or the Kindle app, which is what this page produces. MOBI for an older device, for Mobipocket software, or when something asks specifically for a .mobi file. The MOBI converter handles that.

Which files can I convert for Kindle?

EPUB is the usual starting point. Beyond it the converter takes PDF, DOC, DOCX, ODT, RTF, TXT and HTML, plus older ebook formats such as FB2, LIT, LRF and PDB.