AI book translator
Most translation tools were built for a paragraph. A novel is 300 pages of running context, and that is where they come apart. DualBook translates a book as one unit of work — every chapter is translated with the surrounding chapters in view.
Why a book is different
Feed a book to a general translation tool one chunk at a time and each chunk is translated as if it were the first thing you ever sent. Nothing carries.
Chunk-by-chunk translation
Every chapter starts from zero
DualBook
One book, one continuous piece of work
The translation run
The EPUB is opened and split along its own chapter boundaries, not at an arbitrary character count.
Language, output format and translation style. The style setting is what decides whether the prose reads literary or plain.
Each chapter goes out with the surrounding context attached, so terminology decided early is still honoured late.
Most books finish in 10–30 minutes
Bilingual or translation-only, both from the same run. Read it here or take the file elsewhere.
It was the best of times, it was the worst of times.
Đó là thời kỳ tốt đẹp nhất, cũng là thời kỳ tồi tệ nhất.
The free plan translates and reads the first 20% of any book — no card required.
Start freeWhat comes out
You do not choose one and lose the other. Both are produced together and both export as EPUB.
Original
It was the epoch of belief, it was the epoch of incredulity.
Translated
Đó là thời đại của niềm tin, cũng là thời đại của sự hoài nghi.
The original and the translation aligned paragraph by paragraph, for reading with one eye on the source.
Translated
Đó là thời đại của niềm tin, cũng là thời đại của sự hoài nghi.
Là mùa của Ánh sáng, cũng là mùa của Bóng tối.
Just the translated text, laid out like an ordinary book, for when the source language is not the point.
Both editions come from a single run — no extra cost
About book translation
What people ask before they upload the first one
Something else?
Contact usMost books finish in 10–30 minutes. It depends on length and on the model you choose. The run happens in the background and progress is tracked live per chapter, so you can close the tab and come back.
Yes. The EPUB is split along its own chapter boundaries and rebuilt the same way, so chapter order and divisions survive the round trip.
There is a style setting on the run — literary, formal or plain. It changes how the prose is rendered without changing what it says.
It is machine translation, and we say so plainly. It is well suited to reading, studying and deciding whether a book is worth your time. Anything you intend to publish or rely on professionally should be reviewed by a person.
The free plan translates and reads the first 20% of any book, with no card. That is enough to see how the translation holds across several chapters before you pay for anything.
Your book, your language
Upload an EPUB, choose a language, and read the result beside the original.
