Skip to main content
Convert999
FormatsAll ConvertersCompareUse CasesToolsBlog
Converter
Convert999

Free online file converter supporting 400+ formats. Fast, secure, and private.

Product

  • All Converters
  • Formats
  • Compare
  • Use Cases
  • Tools

Resources

  • About
  • Blog
  • Security
  • Glossary
  • Statistics
  • Changelog
  • Contact

Legal

  • Privacy Policy
  • Terms of Service

© 2026 Convert999. All rights reserved.

Made with for the web

HomeConvertConvert to EPUB

Convert to EPUB

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

eBooks
Choose Files

or drag and drop files here

Max file size: 2GB

Your files are processed locally in your browser. Nothing is uploaded to any server.

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

Convert from EPUB

EPUB Format

About Electronic Publication

File Tools

Compress, resize, merge

Format Glossary

Learn about formats

Other Popular Conversions

.pdfConvert to PDF.docConvert to DOC.docxConvert to DOCX.odtConvert to ODT.rtfConvert to RTF.txtConvert to TXT.htmlConvert to HTML.htmConvert to HTM.mdConvert to MD.texConvert to TEX