EPUB to MOBI
- Step 1: Select your EPUB from your computer or drag & drop it onto the upload-box at the right.
- Step 2: We convert your file into a Kindle-ready MOBI eBook. Also large files are supported.
- Step 3: Download your MOBI ebook and put it on your Kindle.
EPUB to MOBI — Free & Fast
Convert EPUB ebooks to MOBI right in your browser. Our converter preserves chapters, images, and the table of contents while keeping file size small. No sign-up required.
Converting EPUB to MOBI for Kindle
Many Kindle devices and apps work best with MOBI. If your Kindle doesn’t open EPUB directly, converting to MOBI is a quick fix so you can start reading it immediately on your device.
Alternatively: Convert EPUB to MOBI with Calibre
Prefer a desktop app? Calibre is a free, open-source ebook manager with an excellent converter. The open-source program Calibre.
Here is how to convert with Calibre:
Step 1: Click “Add books” and choose your EPUB.
Step 2: Right-click the book → “Convert books” → “Convert individually”.
Step 3: Select “MOBI” as the output format and click “Convert”.
Calibre saves the new file next to your original. Right-click the book again and choose “Open containing folder” to find it.
The ebook-convert command-line tool
On Linux, Calibre installs the ebook-convert CLI. Run it like this:
ebook-convert input.epub output.mobi
The command above converts a file called input.epub right away into a MOBI file with the name output.mobi.
EPUB and MOBI in Comparison
The following two tables give you a detailed overview of the properties and technical specifications of each of the two formats:
The EPUB Format |
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| Name | electronic publication |
| Extension | .epub |
| MIME Type(s) | application/epub+zip |
| Description | EPUB (“electronic publication”) is an open standard for reflowable ebooks. It packages XHTML content, images, CSS, and metadata in a ZIP container. Text adapts to different screens, and EPUB 3 can include audio and interactivity. |
| Tools |
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The MOBI Format |
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| Name | Mobipocket |
| Extension | .mobi |
| MIME Type(s) | application/x-mobipocket-ebook |
| Description | MOBI (Mobipocket) is a long-standing ebook format used by many Kindle devices. It supports reflowable text, images, and basic metadata. Amazon acquired Mobipocket in 2005, and the .mobi extension has been widely used for Kindle distribution. |
| Tools |
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