How to Open EPUB on Kindle (Every Method That Works in 2026)

If you're wondering how to open EPUB on Kindle, the short version is you don't open it on the Kindle at all. You send it to Amazon, Amazon converts it, and it shows up on the device a minute later.

Quick answer. Go to amazon.com/sendtokindle, sign in, drag your EPUB in (up to 200 MB), and wait for it to appear in your Kindle library. Or email it to your @kindle.com address (up to 50 MB). EPUB files copied straight over USB won't open, so for offline or very old Kindles, convert with Calibre first.

This works for every current Kindle e-reader, Scribe and Colorsoft included, plus the Kindle apps. It does not work with store-bought EPUBs that have DRM (more on that below).

Can a Kindle read EPUB?

Yes and no. Amazon's Send to Kindle service accepts EPUB, along with PDF and Word files and a handful of others. It converts the EPUB into a Kindle format during delivery. The e-reader itself doesn't read .epub files you drag over with a cable.

It used to be the reverse. Kindles ran on MOBI for years, and Amazon only started accepting EPUB through Send to Kindle in 2022. Now MOBI is the one that's gone. KDP stopped accepting MOBI for reflowable ebooks on August 1, 2021 and for fixed-layout books on March 18, 2025.

Pick a method

Limits from Amazon's Send to Kindle page and email help page, checked September 2026. Amazon words the email limit as 50 MB total in one place and 50 MB per attachment in another, so keep emails under 50 MB total to be safe.

Method 1. Send to Kindle on the web

This is the one I'd use. It has the biggest size limit and nothing to install.

1. Go to amazon.com/sendtokindle on a computer and sign in with the Amazon account your Kindle is registered to.
2. Drag the EPUB onto the page, or click to pick it.
3. Leave "Add to your Library" ticked. This keeps a copy in your Kindle library so it syncs to every device and app.
4. Click Send.
5. On the Kindle, make sure Wi-Fi is on, then open your library. It usually lands within a couple of minutes. If not, go to settings and choose Sync Your Kindle.

Your reading position syncs across devices for books sent this way (highlights too), which USB-loaded books don't do.

Method 2. Email the EPUB to your Kindle

Handy when the file is sitting in your inbox or on your phone.

Find your Kindle's email address first. On Amazon, go to Manage Your Content and Devices, then Preferences, then Personal Document Settings. Each device and app has its own @kindle.com address.

Then approve the address you'll send from. In the same settings section, under Approved Personal Document Email List, add your email. You can have up to 15 approved senders. Skip this and Amazon rejects the file with error E014, and in my experience that's behind most "my EPUB never arrived" complaints.

Now email the EPUB as an attachment. Subject line doesn't matter. You can attach up to 25 files, and Amazon unzips ZIP files for you. If your Kindle is offline, Amazon keeps retrying delivery for up to 60 days.

(I keep that settings page bookmarked. Finding it through Amazon's account menus takes me about five clicks every single time, and I still pick the wrong one first...)

Method 3. The Send to Kindle desktop app

Amazon has Send to Kindle for PC and a Mac version. On Windows you right-click the EPUB and choose Send to Kindle. On a Mac it lives in the Finder share menu.

One recent change is worth knowing. On 2024 and newer Kindles (and the Scribe), transferring files over USB from a Mac goes through the app's USB file manager, which needs macOS 12 or later. Plain drag-and-drop in Finder stopped being the answer.

Method 4. Kindle apps on iPhone and Android

The Kindle app can recieve documents you send with any of the methods above. You can also use the Share button on an EPUB in your Files app and pick Kindle. Books sent this way show up in the app's library under Docs, and on your e-reader too if you left Add to Library on.

If a book shows on the Kindle but not in the phone app, check that sync is on in the app's settings. In my experience that's the fix nine times out of ten, and it's the one Kindle forums keep repeating.

Method 5. Calibre and a USB cable

For offline reading, very old Kindles, or when you want full control over the conversion.

Calibre is free. Add the EPUB, convert it to AZW3 (the modern Kindle format Calibre can build on its own), plug in the Kindle, and click Send to device. Eject before unplugging..

Calibre doesn't produce Amazon's newer KFX format on its own. A third-party KFX Output plugin exists if you really want it; for most books AZW3 is fine.

Three catches. USB-loaded books don't sync reading position between devices. On the Kindle Colorsoft and newer models, covers of sideloaded books may not display (Calibre's FAQ describes this as Amazon's doing). And you can't email AZW3 files to your Kindle; that route only takes the formats listed earlier.

Kindles released in 2012 or earlier lost Send to Kindle on May 20, 2026, so for those models Calibre and USB is now the only way in. My first-gen Paperwhite (the one with the slightly yellow screen) is in that group, and it still reads AZW3 files perfectly well over a cable.

Troubleshooting when the EPUB won't open or looks wrong

Amazon emails you an error code when a document fails. Here's what the common ones mean, from Amazon's Send to Kindle error page.

A few other things I've seen go wrong.

• Custom fonts vanish. Kindle often swaps embedded fonts for its own. Usually harmless.
• The book appears under Docs instead of Books. That's normal for personal documents.
• Huge EPUB with tons of images. Anything past 8,000 pages is rejected, though you'd need a very long book to hit that.
• Scribe owners can handwrite notes on sent documents, but not on EPUB comics or manga. Children's picture books are excluded as well.

Reading a translated EPUB on your Kindle

If the reason you have an EPUB is that the book isn't available in your language, you can translate the file first and send the result with any method above.

PageTranslate's EPUB translator returns a standard EPUB with the chapters, nested table of contents and footnotes kept. To quote our own EPUB page exactly, "Amazon currently accepts EPUB through Send to Kindle and for Kindle publishing, but Amazon converts the file for Kindle. PageTranslate does not create MOBI or KFX files. Test the result in the reader you plan to use."

So the workflow is short. Upload the EPUB, download the translated EPUB, drop it on amazon.com/sendtokindle. It has to be a DRM-free file you have the right to use, like your own manuscript or a public-domain book.

For authors, KDP accepts EPUB for ebook uploads if it meets the Kindle Publishing Guidelines. Check it in Kindle Previewer before you publish.

Related reading

• Google Translate is bad at books, on why Google won't take your EPUB at all
• Machine translation post editing, for cleaning up a translated EPUB before publishing
• EPUB translator