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Leaving the Kindle behind
A Kobo, a Boox, a PocketBook or an iPad reads EPUB natively. Converting a DRM-free MOBI library is what makes the switch possible without losing the books.
50 BOOKS AT ONCE · CHAPTERS AND COVER KEPT · NO INSTALL
MOBI to EPUB.
Convert MOBI books into EPUB files that open on a Kobo, an iPad, a phone, a Nook — and on a Kindle too, because Send to Kindle has taken EPUB since 2022. Chapters, cover, title and author all carry across. Up to 50 at a time. One thing to know before you start: books bought from Amazon are copy-protected and will be refused, and no online converter can change that.
Convert MOBI to EPUB
Up to 50 files
Drop MOBI files here or browse
MOBI
MOBI
MOBI
MOBI
MOBI
+45
Your EPUB files are ready
Converted
EPUB · chapters · no watermark
MOBI
MOBI
MOBI
MOBI
MOBI
MOBI
+ 12 more queued
Upload your MOBI files, get EPUB books back. This is the whole app.
Every conversion is anonymous — we never track who converts what
4.8 / 5
· 10,000+ paid
€1 day pass · €6 yearly · €30 lifetime · no ads, ever
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€1 day pass · €6 yearly · €30 lifetime · no ads, ever
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One account unlocks all 79 AppsCyborg tools
One account unlocks all 79 AppsCyborg tools — convert, compress, download and extract, across video, audio, images, PDF and more. See all tools →
Two steps. That's it.
1
Upload your MOBI files
One book or 50 at once
2
Download the EPUB files
EPUB
novel.epub
EPUB · no watermark
Grab it within the hour. Download links expire 60 minutes after conversion. Copy the EPUB onto a Kobo or into Apple Books, or add it to Calibre — most readers take it as it is. Need the text as something editable instead? That's MOBI to Word Cyborg.
Why a paid converter is the one worth using
Free e-book converters are funded by advertising, and it shows in the limits: one file at a time, a size cap, and a queue. If you are moving a whole MOBI library onto a new reader rather than a single title, the batch is the whole point.
50 books in one pass
A backlog of public-domain downloads, a series you kept in MOBI, an entire shelf you want on a Kobo. Queue the lot instead of feeding them in one at a time.
Anonymous & private
Your library stays yours. We don't track who converts what, and files are never handed to third parties.
No watermark, no sign-up wall
Nothing is stamped into your book and nothing is held back for a paid tier. What you download is the file.
Try it for €1
A 24-hour day pass costs €1. No subscription, no auto-renewal — enough to convert a shelf and check the results on the reader.
START HERE
Day pass
€1
/ 24 hours
Just need a batch converted today? Unlimited conversions for 24 hours. No commitment.
- Unlimited conversions for 24h
- No subscription, no auto-renew
Yearly
€6
/ year
The price of a coffee, once — for a whole year of conversions.
- Unlimited for 365 days
- Best value if you convert often
Lifetime
€30
once
Pay once, own it forever. Every future format and update included.
- One payment, never again
- All future updates included
Every plan unlocks all 79 AppsCyborg tools — no ads, no watermarks, plus a 7-day money-back guarantee.
How €1 compares to “free”
| MOBI to EPUB Cyborg | Free online converter | Desktop app | |
|---|---|---|---|
| Books per batch | Up to 50 | 1 at a time | Unlimited |
| File size limit | 200 MB per book | Often 50–100 MB | Disk space |
| Daily cap | None | Usually 2–5 files | None |
| Nothing to install | Desktop app | ||
| Ads and watermarks | Both, usually | ||
| Price | from €1 | Free (ad-funded) | €20–60 |
A desktop tool like Calibre is genuinely good and genuinely free — if you are willing to install it, learn it and keep it updated. This is for the times you would rather not.
What you get, and what will stop you
Both formats are reflowable e-books, so the conversion itself is clean — chapters, cover, title and author all carry across, and the result opens in almost any reader. The thing that actually stops people is not the conversion. It is copy protection, and it is worth understanding before you pay for anything.
50
books per batch
200
MB per book
60
minutes to download
0
watermarks
Books bought from Amazon cannot be converted
DRMKindle purchases are locked to the account that bought them. No online converter can open one — anybody claiming otherwise is either lying or selling you something worse. We refuse the file rather than returning a broken book.
Books you hold DRM-free convert fine
✓Project Gutenberg and other public-domain libraries, Humble and StoryBundle purchases, review copies, books from publishers who sell without a lock, and anything you made yourself. These go straight through.
Chapters, cover and metadata survive
TOCThe navigable table of contents comes across as a real EPUB table of contents, not just headings in the text, and the cover, title and author arrive with it. Tested on every release rather than assumed.
EPUB is the format that outlived MOBI
2025Amazon dropped MOBI from Send to Kindle at the end of 2023 and stopped accepting it for publishing in March 2025. Converting the other way is a shrinking use case; this direction is how a MOBI library stops being a dead end.
Nothing stamped on it
cleanNo watermark, no advert chapter appended at the end, no banner on the cover. The file is your book and nothing else.
The honest caveat: copy protection, and how to tell before you pay
If your MOBI files came from Amazon, this page cannot help you and neither can any other converter — the books are encrypted and tied to the account that bought them, and removing that is not something we do. The quickest test is where the file came from. Anything downloaded through "Download & transfer via USB" in your Amazon content library is protected. Anything from Project Gutenberg, Standard Ebooks, a Humble or StoryBundle purchase, a publisher who sells DRM-free, or a book you wrote yourself is not, and will convert. If you upload a protected book we tell you that is the reason rather than handing back a file that will not open — but you will have spent a day pass finding out, so it is worth checking first. The other thing worth knowing: an EPUB works on a Kindle too. Send to Kindle has accepted EPUB since 2022 and converts it on Amazon's side, so converting to EPUB does not cut you off from the device — it does the opposite.
Need to go back the other way for an older Kindle over USB? EPUB to MOBI Cyborg.
See it in action
MOBI to EPUB in under a minute · Watch the tutorial →
A short walkthrough: drop your MOBI files in, wait for the converter, and download every book as an EPUB.
Ready to try it? Create your account above.
Why people convert MOBI to EPUB
Usually because the book is stuck on a format the rest of their shelf has moved past:
R
A shelf full of old downloads
Years of public-domain books saved as MOBI because that is what the Kindle wanted at the time. Fifty at a time gets the backlog onto a format with a future.
P
Reading on a phone
Apple Books, Google Play Books and most Android readers open an EPUB directly. MOBI needs a specific app, and fewer of them ship with support each year.
F
Getting a library into Calibre
Calibre reads both, but EPUB is the format it edits, and the one that keeps working when you move the library to something else later.
T
Long-term archiving
EPUB is an open standard with an active specification. MOBI is a retired proprietary one. For a collection you want readable in ten years, that difference is the whole argument.
S
Sharing a book you wrote
If you published a MOBI years ago and want to hand out something a reader can actually open today, EPUB is the version to send.
If one of those is you, upload your MOBI files and get EPUB books back.
Different format — or the other direction?
Going back to MOBI for an older Kindle? EPUB to MOBI. Need the text as something editable? MOBI to Word and EPUB to Word. Starting from a document instead? Word to EPUB and Word to MOBI — all included in one account.
Common questions
Getting started
What is MOBI to EPUB Cyborg?
A web app that converts MOBI books into EPUB files, keeping the navigable table of contents, the cover and the book's title and author. Upload up to 50 at a time — nothing to install and no watermark.
Does it work on a phone?
Yes. It works on all Android phones, and on iOS 12 and higher. Conversion happens on our servers, so a phone finishes as fast as a desktop — you only need a browser.
How do I convert MOBI to EPUB?
Two steps. Drag your books onto the upload box at the top of this page — up to 50 at a time — then collect the result. One book comes back on its own; a batch comes back as a single ZIP. There is nothing to install and nothing to configure.
Conversion quality
Can you convert a MOBI I bought from Amazon?
No, and neither can anything else online. Kindle purchases are encrypted and tied to the account that bought them, and removing that protection is not something we do. If you upload one, we refuse it and tell you that copy protection is the reason rather than handing back a file that will not open. Books you hold DRM-free — Project Gutenberg, Standard Ebooks, Humble or StoryBundle purchases, DRM-free publishers, anything you wrote — convert normally.
How can I tell whether my MOBI is copy-protected?
By where it came from. If you downloaded it through "Download & transfer via USB" in your Amazon content library, it is protected. If it came from Project Gutenberg, Standard Ebooks, a Humble or StoryBundle purchase, a DRM-free publisher, or your own writing, it is not. Calibre will also refuse to open a protected book, which is a quick way to check before you upload.
How many files can I convert at once?
Up to 50 per batch. Each result is named after the book it came from. One book comes back on its own; a batch comes back as a single ZIP.
Is there a file size limit?
200 MB per book, far more than a MOBI needs — you would only approach it with hundreds of high-resolution images embedded. A conversion that somehow runs longer than five minutes is stopped rather than left hanging.
Why does my book fail to convert?
Almost always because it is copy-protected. Books bought from Amazon are locked to the account that got them, and no converter can open them. We detect this before converting and refuse the file with that reason, so a failure here is usually an answer rather than a fault. If a DRM-free book fails, send it to us and we will look at it.
Will the cover and chapters survive?
Yes. The chapter list comes across as a real EPUB table of contents your reader can navigate, not just bold text in the book, and the cover image, title and author come with it. Both formats are reflowable e-books built on the same ideas, so there is little to lose in between.
Is EPUB better than MOBI?
For almost everything now, yes. EPUB is an open standard that Kobo, Apple Books, Google Play Books, Nook and most phone readers open directly — and Amazon's Send to Kindle has accepted it since 2022, so it works on a Kindle too. MOBI is being retired: Amazon dropped it from Send to Kindle at the end of 2023 and from publishing in March 2025. The one thing MOBI still does that EPUB does not is copy onto a very old Kindle over USB, which is why the other direction still exists.
Pricing, privacy & limits
How much does it cost?
A €1 day pass gives you 24 hours of unlimited conversions. Yearly (€6) and lifetime (€30) plans are also available (+ VAT). Every plan unlocks all 79 AppsCyborg tools, not just this one.
How long does my download link stay valid?
60 minutes. After that the link expires and the converted files are removed — just re-run the conversion if you need them again.
Do you track or keep my files?
No. We don't run ad or analytics tracking on what you convert, and your files are never sold or shared for marketing. Uploaded books are processed only to build your EPUB files and are removed once the download window closes.
Is there a limit on how often I can convert?
No. While your day pass, yearly or lifetime plan is active you can run as many 50-file batches as you like — there is no monthly quota and no per-conversion charge.
Still have a question?
We usually reply within a day.
Get your books off a retired format
Upload up to 50 MOBI files, download them as EPUB with chapters, cover and metadata intact. €1 for a day, €6 for a year, €30 once and for good.
Free account
€1 day pass
Anonymous
Creating your account is free — you only pay when you convert
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or sign up with email
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