Ebook Converter
Convert between EPUB, MOBI, AZW, FB2, PDF, RTF, TXT and 20+ other formats. Conversion runs on the server via Calibre — no software needed.
Drop an ebook here or click to browse
EPUB · MOBI · AZW · FB2 · PDF · RTF · TXT · and 20 more formats
Conversion runs on the server via Calibre
Supported input formats
Supported formats
This tool supports 25 input formats and 5 output formats, powered by Calibre's ebook-convert command-line tool.
Output format guide
- EPUB — the open standard. Works on Kobo, Apple Books, Google Play Books, and most non-Kindle readers.
- TXT — plain text, no formatting. Best for pasting into other tools or reading in any editor.
- HTML (stripped) — clean semantic HTML with all calibre classes, inline styles, and wrapper divs removed. Only headings, paragraphs, lists, links, and images remain.
- RTF — Rich Text Format. Opens in Microsoft Word, LibreOffice, and most word processors.
- PDF — fixed-layout document. Note: PDF output requires Calibre with PDF rendering support installed on the server.
File size limit
Maximum upload size is 50 MB. Most ebooks are well under 10 MB. Conversion may take up to 90 seconds for large or complex files.
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