Convert to MOBI

Convert e-books to MOBI online, for free, with nothing to install.

DOCX, PDF, EPUB, AZW3 and 18 other e-book formats can be converted to MOBI: drop your files above, and MOBI is already chosen as the output. Files are converted on our server and deleted 72 hours later.

What is a MOBI file?

MOBI – Mobipocket e-book. MOBI is the e-book format of Mobipocket, once the format of Kindle e-readers. Older Kindles open it; newer ones prefer EPUB or AZW3. Books bought in a store often have DRM, which stops them from being converted.

How to convert e-books to MOBI

  1. Click Select File, or drop your e-books anywhere on this page. Any of the 22 supported formats works.
  2. MOBI is already chosen as the output on this page.
  3. Click Convert, then Download when it's done.

MOBI at a glance

MOBI
LayoutFlowing text
EditableWith e-book tools
Created byMobipocket, 2000
Best forOlder Kindle devices

Frequently asked questions

Why convert to MOBI?

MOBI is the e-book format of Mobipocket, once the format of Kindle e-readers. Older Kindles open it; newer ones prefer EPUB or AZW3. Books bought in a store often have DRM, which stops them from being converted. Best for: Older Kindle devices.

Which e-book formats can be converted to MOBI?

AZW, AZW3, CBC, CBR, CBZ, DOCX, EPUB, FB2, HTML, HTMLZ, LIT, LRF, ODT, PDB, PDF, PML, PRC, RB, RTF, TCR, TXT, TXTZ.

Is converting to MOBI free?

Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.

Are my e-books uploaded anywhere?

These conversions run on our server, because they need calibre, which does not run in a browser. Your file is sent over an encrypted connection, and both it and the result are deleted 72 hours after the conversion. The server has no internet access while it works on your file.

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