Upload your EPUB and get the whole book back in the language you want — chapters, footnotes, and layout intact.
EPUB and text-based PDF
Is it safe to upload my book? — what we do with your file
EPUB Translator helps users more efficiently understand foreign language content they legally own, for learning, research, and personal reading. We do not produce content, only provide translation technology services.
Chapter-aware translation
Each chapter is translated with the surrounding context, not line by line
Formatting stays put
Footnotes, italics, chapter structure and the table of contents survive the round trip
You can watch it work
Progress shows up chapter by chapter while it runs
Opens in any reader
You download an EPUB that works in Apple Books, Kobo and Calibre
Four pictures for the four things people want to know before handing over a book: what happens to the file, what the bilingual output looks like, which languages a book can go into, and whether the characters keep their names and forms of address.
EPUB Translator is an online book translator: hand it an e-book and it gives you the same book in another language. Not a page, not a selection — the whole file: every chapter, in reading order, still openable in Apple Books, Kobo, Calibre, or any other reader that handles EPUB.
The input format is EPUB, which is what most e-books already are and what every reader app opens. Everything below describes what a book translator has to get right that a general-purpose translator does not.
Most ways of translating a book fall down at the file. Browser extensions translate what is on screen and leave you with nothing to keep. Copying chapters into a chat model works until you hit the context limit, and then you are stitching thirty pieces back together by hand. Generic document converters flatten an EPUB into something that is no longer an e-book. This tool exists because the format is the hard part, not the sentences.
Pick an EPUB from your device. Nothing is uploaded until you say so, and you do not need an account to get this far — the file is read in your own browser just far enough to recognise the book, so its title and cover come straight back at you. If what you have is a Kindle file instead, the free Kindle to EPUB converter turns a DRM-free AZW3 or MOBI into an EPUB first — also in your own browser, with nothing uploaded anywhere.
Pick one of the 18 target languages. The source language is detected automatically; you never have to declare that the book is in German.
Sign in and the exact price for this file is on screen before you pay anything. It is one payment for this book — no subscription, nothing to cancel — and the EPUB you download keeps the chapters, layout and images of the original.
18 target languages: English, Simplified Chinese, Traditional Chinese, Japanese, French, Spanish, Arabic, Korean, Vietnamese, Indonesian, Polish, Czech, Italian, German, Portuguese, Turkish, Russian, and Ukrainian. Source language is auto-detected and is not restricted to that list — a Swedish novel into English works fine. Japanese books typeset vertically come back horizontal and left-to-right when the target is English — see how to translate a Japanese light novel EPUB to English. The full breakdown is on Supported Languages.
You pay per book, once, with no subscription and nothing to cancel. Translation costs $0.004–$0.0125 per 1,000 characters of text, with a minimum of $3.99 per book. The exact figure depends on how long the book is, and you see it before you commit, ahead of any payment step. Current rates are on the book translation pricing page, and how that compares with the free and subscription routes is worked through in the cheapest way to translate a book.
Scanned PDFs are not supported. A text PDF works — we rebuild it into an e-book before translating — but a scan is only pictures of pages, with nothing to translate, so we tell you that at upload instead of charging you for an empty book. DRM-protected files cannot be opened at all — that is a property of the file, not a limitation we chose.
A book translator takes a complete e-book and hands it back in another language with the book still assembled: chapters in order, table of contents, footnotes, and images where the author put them. That is what separates it from a page translator or a chat model — those work on fragments and leave the reassembly to you.
Yes. The translation is applied to the text inside the EPUB's existing structure, so chapters, the table of contents, footnotes, and inline styling come back intact. That is the entire reason this is a dedicated tool and not a generic document converter. See how EPUB Translator works.
Most books finish in minutes rather than hours. Length is what drives it — a short novel is quick, a 700-page technical manual takes longer. You can close the tab; the job keeps running and the file is waiting when you come back.
Yes. Translation starts at $3.99 per book, and a typical 500,000-character novel comes to about $4.75. After signing in, the exact price for your file is shown before any payment — worked out from the book's own character count, not from a guess at its page count. You pay once for that file, with no subscription attached.
Yes. Every translated book comes back as two EPUBs: one with the translation only, and a bilingual edition in which each original paragraph is followed by its translation. Both are included in the same price — download either, or both — and the bilingual one opens in Apple Books, Kobo or any EPUB reader like a normal book. It is the format language learners ask for, because you can check any sentence against the original without switching files.
Yes, if the PDF contains real text. Upload it the same way as an EPUB: the PDF is rebuilt into an e-book first — paragraphs re-joined across page breaks, running headers and page numbers removed, chapter headings detected — then translated, and what you download is an EPUB. A scanned PDF is only pictures of pages, with no text to translate, so it is rejected at upload before anything is charged; run it through OCR first.
Convert it to EPUB, then translate the EPUB. The free Kindle to EPUB converter turns a DRM-free AZW3 or MOBI file into an EPUB in your browser — nothing is uploaded and no account is needed — and you upload that EPUB here. Books bought from the Kindle Store are usually DRM-protected; those cannot be converted or translated, and this tool does not remove DRM.
Yes, and there is nothing to set up. Before translating, the tool reads the whole book and builds a glossary: how each name and invented term will be rendered, and for fiction, who the main characters are, their gender, and how they address each other in the target language. Each passage is then translated with the entries for the characters who appear in it. A name keeps one spelling from the first chapter to the last, and two characters do not drift between formal and familiar address from one paragraph to the next — the problem you get when a chat model translates a book piece by piece.
For one chapter, that works. For a whole book you hit context limits, lose the chapter structure, rebuild the EPUB by hand, and terms drift between sections. Chat models can also leave text untranslated. EPUB Translator checks eligible prose passages and retries flagged passages; persistent problems escalate to a stronger translation model. In a separate recovery test, the stronger model recovered 35 of the 36 segments the fast model had failed. Detection is imperfect, and short or non-prose content is not all eligible. If retries or escalation fail, or escalation is unavailable, delivery can continue with a problematic passage from the original translation model, and the issue is logged. Most of the book runs on a fast model, with the stronger one used for persistent problems — a full novel costs about $4.75, shown before you pay. Full comparison: Why not translate with an LLM directly.
Calibre with the Ebook Translator plugin is free and gives you more control, but you install it and bring your own API key for an LLM engine. BookTranslator.app accepts more formats and languages. This tool is the no-setup option for one EPUB, paid once. The full comparison is in the best EPUB translators in 2026, with one-to-one pages for the Calibre plugin and BookTranslator.
It is processed to produce your translation and it stays yours. Upload only books you actually own the right to read — the tool is for reading foreign material you have legitimate access to, not for redistributing someone's catalogue.
Any reader that opens EPUB: Apple Books, Kobo, Calibre, Thorium, Google Play Books. The output is a standard EPUB file you download and own, not a document locked inside this site. What people actually do with it is collected in use cases. Books that never got an edition in your language are the common case — Dungeon Crawler Carl, Project Hail Mary and Re:Zero each have a page on what that looks like.