How do I open a .MOBI file on Windows or Mac?

You can open .MOBI files using Amazon Kindle App, Calibre eBook Viewer, Sumatra PDF Reader. If you do not have native software installed, you can use OpenAnyFile's free File Identifier or convert .MOBI to a standard format in your browser.

Is a .MOBI file safe to open?

This format carries a safety rating of Low Risk. Use Calibre to convert legacy MOBI books to modern EPUB format

Can I convert a .MOBI file to other formats?

Yes! .MOBI can be converted to formats such as .EPUB, .PDF directly in your web browser.

What should I do if a .MOBI file is corrupted or won't open?

If your .MOBI file displays an invalid header or signature error, check its magic bytes hex header (Varies) using OpenAnyFile's Magic Byte Detector or follow our step-by-step file repair guide.

How do I open .MOBI files?

You can open .MOBI files using Amazon Kindle App, Calibre eBook Viewer, Sumatra PDF Reader.

Documents • MIME: application/x-mobipocket-ebook

.MOBI – MOBI File Format

Q: What is a .MOBI file?

A .MOBI file is a MOBI File Format associated with Documents. MOBI is a digital book format created by Mobipocket and used extensively on Amazon Kindle hardware devices prior to AZW3 adoption.

MOBI is a digital book format created by Mobipocket and used extensively on Amazon Kindle hardware devices prior to AZW3 adoption.

Primary Category Documents

MIME Type application/x-mobipocket-ebook

Magic Bytes Signature Varies

Security Risk Rating Low Risk

Recommended Software to Open .MOBI

Amazon Kindle App

windows, mac, linux • Free

Calibre eBook Viewer

windows, mac, linux • Free

Sumatra PDF Reader

windows, mac, linux • Free