MOBI to RB Converter

Convert MOBI to RB online quickly and easily. Just upload your file, convert it, and download the RB in seconds.

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What is MOBI ?

MOBI is the Mobipocket e-book format, the original Kindle format, still read by older Kindles and many reading apps.

MOBI format  ▶

What is RB ?

RB is the format of the Rocket eBook, one of the first dedicated e-readers, released by NuvoMedia in 1998.

RB format  ▶

How to convert MOBI to RB

  1. Upload your MOBI file
    Drag and drop your MOBI file, click 'Select Files' to upload from your device, or import directly from Dropbox, Google Drive, OneDrive, or paste a URL.
  2. Choose RB as output format
    The converter is preset to RB, but you can select any other output format before converting.
  3. Adjust settings (optional)
    If you like, tweak output options such as resolution, quality, or compression before converting.
  4. Convert the file
    Click the 'Convert' button. The conversion takes only a few seconds.
  5. Download your converted file
    Download the converted file to your device, or save it directly to Google Drive, Dropbox, or OneDrive.