Ebook Format Converter

Online ebook format converter powered by the open-source calibre engine. Convert between EPUB, MOBI, AZW3, FB2, PDF, TXT and more. Files are used only for the conversion and deleted right after.

Choose an ebook or drop it here
Supports EPUB, MOBI, AZW3, FB2, PDF, TXT and more
Selected file: -
Note: conversion runs on the server. Files are used only for this request and deleted immediately afterwards — they are not stored. Avoid uploading files with sensitive personal information.

About ebook format conversion

Supported formats

  • Input: EPUB, MOBI, AZW3, FB2, PDF, TXT, plus DOCX, RTF, HTML, CBZ/CBR, ODT, LIT, PDB, SNB and other calibre-supported formats.
  • Output: EPUB, MOBI, AZW3, FB2, PDF, TXT.

How to use

  1. Drag in or pick an ebook.
  2. Choose the output format under "Target format".
  3. Click "Convert", then "Download ebook" when finished.

Privacy

Conversion is done by the open-source calibre engine on the server. Files are used only for the request and removed immediately afterwards — nothing is kept.

FAQ

  • Layout changed after conversion? Formats support layout differently (e.g. TXT has no images or styles), so complex layouts may differ slightly.
  • PDF to ebook? PDF is a fixed-layout format; reflowing into EPUB/MOBI depends on whether the PDF has extractable text. Scanned PDFs have limited results.
  • Will my file leak? No. Files never leave this service and are cleared right after conversion.