About BookConv

Making eBook conversion free, secure, and accessible for everyone

Our Mission

BookConv was created to solve a simple problem: everyone has eBooks in the wrong format. Whether you're switching from Kindle to Kobo, converting old MOBI files to EPUB, or preparing manuscripts for publication, format compatibility shouldn't be a barrier.

We believe eBook conversion should be:

  • ✓Free — No hidden fees, no limits on personal use
  • ✓Secure — Your files are encrypted and auto-deleted within 1 hour
  • ✓Simple — No registration, no software to install
  • ✓Open — Powered by Calibre, the industry-standard open-source engine

Why Choose BookConv?

Lightning Fast

Powered by Calibre's optimized conversion engine. Most conversions complete in seconds, not minutes.

Privacy First

No registration required. Files are encrypted during transfer and automatically deleted within 1 hour.

28+ Formats

Support for EPUB, MOBI, AZW3, PDF, DOCX, TXT, and many more. Convert between any combination of formats.

Format Preserved

Images, chapters, metadata, and formatting are preserved during conversion. Your eBook looks exactly as intended.

Powered by Calibre

BookConv uses the Calibre engine — the most trusted open-source ebook library in the world. Used by millions of readers and developers, Calibre ensures:

  • •Industry-standard conversion quality — Font rendering, chapter structure, and metadata are preserved faithfully
  • •Open-source transparency — No black-box algorithms, fully auditable codebase
  • •Active development — Continuously improved by a global community of contributors
Calibre is available under GNU GPL v3. Source: github.com/kovidgoyal/calibre

Ready to Convert Your eBooks?

Join thousands of readers who trust BookConv for their format conversion needs.

Start Converting Now

Get in Touch

Questions, feedback, or feature requests? Reach out through any channel — we read everything.

hello@bookconv.com@GinoTou2024Reddit

Frequently Asked Questions

Is BookConv really free?

Yes! BookConv is completely free for personal use. We offer a Pro plan for power users who need batch processing and higher file size limits, but individual conversions are always free with no registration required.

How long are my files stored?

Uploaded files are automatically deleted within 1 hour. We never store your content longer than necessary to complete the conversion and provide you with the download link.

Do you sell my data?

Absolutely not. We don't sell user data, and we don't use your files for any purpose other than conversion. Your privacy is our priority — that's why we don't even require account creation.

What formats do you support?

We support 28+ formats including EPUB, MOBI, AZW3, PDF, DOCX, TXT, RTF, HTML, FB2, LIT, CBR, DJVU, JPG, and PNG. New formats are added regularly based on user demand.