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Convert to EPUB

Convert any file to Electronic Publication format — free, fast, and private

eBooks
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About EPUB Format

Electronic Publication (.epub)

EPUB (Electronic Publication) is the open standard for digital eBooks, maintained by the W3C. EPUB uses HTML/CSS for content rendering, making eBooks reflowable — text automatically adapts to different screen sizes, font preferences, and reading orientations. EPUB 3 supports fixed-layout pages, multimedia (audio, video), MathML, SVG graphics, JavaScript interactivity, and accessibility features (WCAG compliance, screen reader support). The format is supported by Apple Books, Google Play Books, Kobo, Nook, Calibre, and most e-reader apps (but not Amazon Kindle, which uses its own formats). EPUB files are essentially ZIP archives containing XHTML content, CSS stylesheets, images, and metadata. Converting to EPUB is essential for publishing digital books across the widest range of platforms and devices.

Convert to EPUB from any format

Choose a source format below to convert to Electronic Publication

MOBIEPUBAZWEPUBAZW3EPUBFB2EPUBLITEPUBLRFEPUBPDBEPUBTCREPUBDJVUEPUBCBZEPUBCBREPUB

Frequently Asked Questions

How do I convert files to EPUB?
Simply upload your file using the converter above, select EPUB as the output format, and click convert. The conversion happens instantly in your browser — no uploads needed.
What file formats can be converted to EPUB?
You can convert 11+ formats to EPUB, including MOBI, AZW, AZW3, FB2, LIT and more. Browse the full list of supported source formats above.
Is converting to EPUB free?
Yes, Convert999 is 100% free with no limits. Convert as many files to EPUB as you need — no registration, no watermarks, no hidden fees.
Is my data safe when converting to EPUB?
Absolutely. All conversions happen locally in your browser. Your files are never uploaded to any server, ensuring complete privacy and security.

Explore EPUB

EPUB Converter

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EPUB Format

About Electronic Publication

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