Convert to MOBI

Convert any file to Mobipocket eBook format — free, fast, and private

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About MOBI Format

Mobipocket eBook (.mobi)

MOBI is Amazon's legacy eBook format, originally created by Mobipocket and acquired by Amazon for Kindle devices. MOBI supports basic text formatting, images, tables, and bookmarks. While Amazon has transitioned to newer formats (KF8/AZW3), MOBI remains compatible with all Kindle devices and apps. MOBI files are limited compared to EPUB: they don't support video, advanced CSS, or the latest accessibility features. For publishing on Amazon, authors typically upload EPUB or DOCX files, which Amazon converts to its internal format. Converting MOBI to EPUB provides access to a wider range of e-readers and more modern features.

Convert to MOBI from any format

Choose a source format below to convert to Mobipocket eBook

EPUBMOBI AZWMOBI AZW3MOBI FB2MOBI LITMOBI LRFMOBI PDBMOBI TCRMOBI DJVUMOBI CBZMOBI CBRMOBI

Frequently Asked Questions

How do I convert files to MOBI?

Simply upload your file using the converter above, select MOBI as the output format, and click convert. The conversion happens instantly in your browser — no uploads needed.

What file formats can be converted to MOBI?

You can convert 11+ formats to MOBI, including EPUB, AZW, AZW3, FB2, LIT and more. Browse the full list of supported source formats above.

Is converting to MOBI free?

Yes, Convert999 is 100% free with no limits. Convert as many files to MOBI as you need — no registration, no watermarks, no hidden fees.

Is my data safe when converting to MOBI?

Absolutely. All conversions happen locally in your browser. Your files are never uploaded to any server, ensuring complete privacy and security.

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