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DRM-free EPUB only. The download is a MOBI file. Conversion stays in this browser.

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Convert an EPUB file to MOBI

Convert an EPUB file to MOBI for Kindle in your browser. No signup, and the file stays on your device.

What is an EPUB to MOBI converter?

An EPUB to MOBI converter takes an EPUB ebook and saves it in MOBI format. People use it to convert an EPUB file to MOBI, turn an EPUB into MOBI, or change an EPUB to the Kindle format a reading app still opens. This page does that in the browser: you upload a DRM-free EPUB and download a MOBI file. Chapter text and supported pictures are kept. The result is a MOBI ebook, not a renamed EPUB.

EPUB to MOBI converter features

Save an EPUB in MOBI format for a Kindle reading app.

  • EPUB to MOBI

    Upload a .epub and download a .mobi file with the book text and pictures.

  • Kindle reading

    The MOBI file is the format to use when a Kindle app asks for MOBI instead of EPUB.

  • Chapters and cover art

    Spine chapters stay in order. A cover image in the EPUB is stored as the MOBI cover.

  • Browser-side conversion

    The ebook stays on your device. No account is required to convert EPUB to MOBI.

How to convert EPUB to MOBI

Three steps from an EPUB ebook to a MOBI file.

  1. Add the EPUB

    Drop a DRM-free .epub file. The converter reads the package in your browser.

  2. Convert to MOBI

    Click Convert to MOBI. Chapter text and supported pictures are written into the Kindle file.

  3. Download the file

    Save the .mobi file and open it in a Kindle reading app.

Tips for EPUB to MOBI

Get a cleaner MOBI from an EPUB.
  • 01

    Use a DRM-free EPUB

    Encrypted books are rejected. Convert a copy you can open without a store account.

  • 02

    Keep pictures modest

    JPEG, PNG, and GIF pictures are included, up to 40 images. PNG files are stored as JPEG.

  • 03

    Expect reflowed text

    MOBI reflows chapter text. Fixed layouts, fonts, and embedded audio do not carry over.

  • 04

    Open it as MOBI

    The download uses the .mobi extension. Renaming an EPUB to .mobi does not create this file.

Great for

Reasons to save an EPUB as MOBI.

  • A Kindle app that wants MOBI

    Turn an EPUB into the MOBI file an older Kindle workflow still asks for.

  • Changing the ebook format

    Keep the same chapters when you need the book in MOBI instead of EPUB.

  • A cover you can see

    Cover art from the EPUB is stored so the reader can show it.

  • A private conversion

    Build the MOBI on your device when you do not want to upload the book.

Why use this converter

A focused EPUB to MOBI path in the browser.

  • Free to use

    Convert EPUB to MOBI with no signup and no watermark on the download.

  • Private by default

    Reading the EPUB and writing the MOBI stay in the browser.

  • No install

    Open the page, add the file, and download. Calibre does not have to be installed.

  • Chapter order kept

    The EPUB spine becomes the chapter order in the MOBI file.

Technical details

How this EPUB to MOBI conversion works.
Input
A DRM-free EPUB up to 20 MB. Encrypted packages are rejected.
Output
A MOBI ebook with UTF-8 chapter text. JPEG and GIF pictures are stored as image records. PNG pictures are written as JPEG.
What is left out
Fonts, audio, video, and fixed-layout styling are not copied. Up to 40 pictures are included.
Where it runs
The EPUB is unpacked and the MOBI is written locally in the browser. The file is not uploaded for conversion.

Sources & References

References for the EPUB package and the MOBI file this converter writes.
  • “EPUB is an e-book file format that uses the ".epub" file extension.”
    — Wikipedia — EPUB

    EPUB: This tool reads that package, including the spine of chapters and the cover image. en.wikipedia.org/wiki/EPUB

  • “MOBI is the format used by the MobiPocket Reader and Amazon Kindle Readers.”
    — MobileRead Wiki — MOBI

    MOBI: The download is that MOBI ebook, so a Kindle reading app can open the converted book. wiki.mobileread.com/wiki/MOBI

Frequently Asked Questions

Quick answers about this tool—open a question to read more.