EPUB Translator: Translate Entire Books Online

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Original · English

Calculus Made Easy

Chapter I

A little bit of. The sum of.

These dreadful symbols are:

(1) d which merely means “a little bit of.” Thus dx means a little bit of x; or du means a little bit of u. But you will find that these little bits (or elements) may be considered to be indefinitely small.

d x, d u

(2) ∫ which is merely a long S, and may be called (if you like) “the sum of.” Thus ∫dx means the sum of all the little bits of x; or ∫dt means the sum of all the little bits of t.

\int d x, \int d t

The word “integral” simply means “the whole.” If you think of the duration of time for one hour, you may (if you like) think of it as cut up into 3600 little bits called seconds. The whole of the 3600 little bits added up together make one hour.

Translation · European Spanish

El cálculo al alcance de todos

Capítulo I

Un poquito. La suma.

Estos temibles símbolos son:

(1) d, que solo significa «un poquito de». Así, dx es un poquito de x; du, un poquito de u. Pero verá que estos pequeños trozos (o elementos) pueden considerarse indefinidamente pequeños.

d x, d u

(2) ∫, que no es más que una S alargada y puede llamarse, si lo desea, «la suma de». Así, ∫dx es la suma de todos los pequeños trozos de x; ∫dt, la de todos los de t.

\int d x, \int d t

La palabra «integral» significa simplemente «el todo». Puede imaginar una hora dividida en 3600 pequeños trozos llamados segundos. Todos esos 3600 trozos sumados forman una hora.

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From an EPUB file to a book you can read in another language

Upload the complete book, choose the target language and output mode, then submit the task. When processing finishes, use the download button to save your EPUB.

Keep the book in EPUB format
The result is a downloadable EPUB, with chapters, table of contents, images, and reading structure retained where possible. Open it in your reader and check navigation and notes against the original.
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Translation-only output replaces the original text. Bilingual output places the translation after each original passage so you can compare both languages as you read.
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Add instructions about the subject, preferred names, terminology, or tone. For example: “Keep character names in English and use a conversational tone.”
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New users receive trial credits. EPUB translation is charged by usage. See Pricing for current rates, and download your EPUB when the task is complete.

Frequently asked questions

Can I translate an entire EPUB book?

Yes. Upload the complete EPUB and select a target language. You do not need to copy and translate passages individually. Check the current upload and processing limits before submitting your book.

What does a bilingual EPUB look like?

A bilingual EPUB places the translation after each original passage, so you can compare both languages while reading. Choose translation-only output if you prefer to read just the translated text.

Will chapters, images, and formatting be preserved?

PDF Craft aims to retain chapters, the table of contents, images, and reading structure. Results depend on the source EPUB. After downloading, check navigation, notes, and important passages in your reader.

Can I specify names and terminology?

Use the translation instructions field to describe the subject, preferred names, terminology, and tone. For example: “Keep character names in English.” Review important terms in the finished book.

How much does EPUB translation cost?

New users receive trial credits. After using them, add credits to continue translating. See Pricing for current usage rates.

Do I need the desktop app?

You can translate and download your EPUB online. PDF Craft Desktop is an additional option for reading and organizing the original and translated editions. You can also use your preferred EPUB reader.