Frequently Asked Questions¶ E-book format conversion¶ What formats does calibre support conversion to/from?¶ calibre supports the conversion of many input formats to many output formats. It can convert every input format in the following list, to every output format. Input Formats: AZW, AZW3, AZW4, CBZ, CBR, CB7, CBC, CHM, DJVU, DOCX, EPUB, FB2, FBZ, HTML, HTMLZ, LIT, LRF, MOBI, ODT, PDF, PRC, PDB