Can I convert books bought from Apple Books or Kobo?

Only if they are DRM-free. Purchased books are usually encrypted and cannot be converted by any tool.

AZW3 unless your Kindle is a first- to third-generation model; AZW3 supports embedded fonts and better layout.

How do I get the file onto the Kindle?

Copy it via USB to the documents folder, or email it to your Kindle address.

Archives, Ebooks & Fonts

EPUB to MOBI

Older Kindles read MOBI and AZW3, not EPUB. Convert your DRM-free books with cover, chapters and table of contents intact.

Processed on our EU server over HTTPS and deleted automatically within 1 hour.

Drop EPUB files here

or click to browse · paste from clipboard · up to 200 MB each

Select files

Options

Output

Why convert EPUB to MOBI

Amazon’s Send to Kindle accepts EPUB for newer devices, but Kindles from before 2012, some Kindle apps and USB sideloading still need MOBI or AZW3. Converting once makes the whole library usable.

The conversion uses Calibre’s engine on our server, the standard tool for e-book formats: it rebuilds the table of contents, embeds the cover, and produces AZW3 (KF8) for better formatting or classic MOBI for the oldest devices.

How it works

Drop EPUB file onto the box above, click it to browse, or paste from the clipboard.
Adjust the options if you need to — the defaults suit most cases.
Press Convert. The file is uploaded securely, converted, and the result is offered for download.
Download the MOBI — individually or all at once.

About the formats

EPUB · Electronic publication · .epub

The open e-book standard used by Apple Books, Kobo, Google Play Books and most readers — except older Kindles.

EPUB is reflowable: text adapts to screen size and font settings, unlike PDF.
EPUB 3 supports audio, video and fixed-layout pages for comics and children’s books.
Amazon’s Send to Kindle accepts EPUB since 2022, but older Kindles still want MOBI or AZW3.

MOBI · Mobipocket e-book · .mobi

The older Kindle format, discontinued by Amazon in 2022 but still the only option for pre-2012 Kindles and some readers.

MOBI has limited formatting compared with EPUB: no CSS floats, limited tables, no embedded fonts.
Amazon replaced MOBI with AZW3/KF8 and now KFX.
Converting EPUB to MOBI works well for novels; complex layouts lose fidelity.

Related conversions

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