E-book Converter

Convert e-books between EPUB, MOBI, AZW3, FB2, PDF and DOCX. Get the format your e-reader or Send to Kindle expects, with chapters and the table of contents kept.

or drag and drop file here

Supported: EPUB, MOBI, AZW3, FB2, PDF, DOCX, HTML, TXT, RTF, ODT

Fast conversionSecure processingNo registration

E-book Format Comparison

Each e-book format has its strengths. Understanding these differences helps you choose the right format for your device and use case.

FormatDescriptionCompatible Devices
EPUBOpen standard format with reflowable text and rich formatting supportApple Books, Kobo, Nook, most e-readers; Kindle via Send to Kindle
MOBILegacy Amazon Kindle format with basic formattingOlder Kindle devices, Kindle apps
AZW3Modern Amazon Kindle format with enhanced typographyKindle Paperwhite, Kindle Oasis, Kindle apps
FB2XML-based format popular in Russia and Eastern EuropeFBReader, CoolReader, various Android apps
PDFFixed-layout format preserving exact page appearanceAll devices, best for printing and complex layouts

How to Convert E-books

  1. Select your target format from the dropdown menu above
  2. Click "Select file" and choose your e-book or document
  3. Wait for the conversion to complete
  4. Download your converted e-book

Common Use Cases

  • Reading on Kindle — Convert to EPUB to send a book to your Kindle with Send to Kindle, or to AZW3 to copy it over USB
  • Reading on Kobo — Convert your DRM-free MOBI or AZW3 books to EPUB for Kobo and other e-readers
  • Archiving — Convert to EPUB for long-term storage in an open format
  • Printing — Convert to PDF for printing or sharing with fixed layout

Technical Details

Our e-book converter uses industry-standard tools to ensure high-quality conversions:

  • Preserves chapter structure and table of contents
  • Maintains formatting including fonts, styles, and paragraphs
  • Extracts and embeds cover images when available
  • Converts embedded images with quality preservation

Important Notes

Some limitations apply to e-book conversions:

  • DRM-protected files cannot be converted.
  • Complex layouts may not convert perfectly between fixed and reflowable formats.
  • Some proprietary features may be lost during format conversion.

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Frequently Asked Questions

Can I convert DRM-protected e-books?

No. Books with copy protection (DRM), such as most purchases from Amazon, Apple or other stores, can't be converted. DRM-free books, including many from independent publishers and public-domain libraries, convert normally.

Which format should I choose for my Kindle?

If you use Send to Kindle, choose EPUB: Amazon accepts EPUB there and no longer accepts MOBI. To copy a book to your Kindle over USB, choose AZW3, which current Kindles read with better typography than MOBI. MOBI is only worth it for very old Kindle models.

Will my book keep its cover image after conversion?

Yes, cover images are preserved during conversion when they exist in the source file. The cover will be embedded in the output file in the appropriate format.

What's the difference between EPUB and MOBI?

EPUB is the open standard used by most e-readers, and it's also what Send to Kindle accepts. MOBI is Amazon's older Kindle format: current Kindles prefer AZW3, and Send to Kindle no longer takes MOBI. EPUB generally offers better formatting options.

Can I convert PDF to EPUB?

Yes, but results vary depending on the PDF. Text-based PDFs convert well, while scanned documents or image-heavy PDFs may lose formatting. For scanned PDFs, consider using OCR first.

What file size limits apply?

E-book files up to 100 MB are supported. Most e-books are well under this limit. If your file is larger, it may contain high-resolution images that could be optimized.

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