Welcome to the File Converter

Upload your file to start converting. Choose a file from your device or use a remote file link.

${shortenFileName(item.file_name)} ${formatBytes(item.file_size)}

Output:

Add ${items.length} files

Convert

How to Convert Mobi to AZW4?

Click the “Choose MOBI Files” button and select your MOBI file
Click on the “Convert” button to start the conversion
When the status changes to “Done”, click the "Download AZW4" button

Convert Any MOBI to AZW4

This tool supports converting many types of Mobi to AZW4. Convert EPUB, PDF, AZW, AZW3, FB2, HTMLZ, LRF, OEB, TXT AND RTF to AZW4.

Best Mobi Converter

Convert your Mobi with perfect quality, size, and compression. Plus, you can also batch convert Mobi using this tool.

Free & Secure

Our Mobi Converter is free and works on any web browser. We guarantee file security and privacy. Files are protected with 256-bit SSL encryption and automatically delete after a few hours.

What is an MOBI file?

MOBI is an eBook format originally developed by Mobipocket and later acquired by Amazon, widely used on Kindle devices and apps. It supports text, images, hyperlinks, and other multimedia elements, making it suitable for creating high-quality eBook content. Compared to traditional formats like EPUB or PDF, MOBI offers better compatibility with Kindle devices and optimized layout, ensuring a consistent reading experience across different screen sizes. Additionally, MOBI files often include digital rights management (DRM) protection to prevent unauthorized copying and distribution. It is widely used in the publishing industry and personal creation, suitable for novels, textbooks, magazines, and various types of eBooks.

Developed by: Mobipocket (now owned by Amazon)
Initial Release: 2000
Useful links:

https://en.wikipedia.org/wiki/MOBI

https://calibre-ebook.com/

https://www.amazon.com/kindle-dbs/fd/kcp

What is an AZW4 file?

AZW4 is an advanced eBook format developed by Amazon, specifically designed for Kindle devices and apps, widely used in Kindle 4 and later models. It typically includes higher levels of digital rights management (DRM) protection to ensure content security and copyright protection. Compared to traditional formats like AZW or MOBI, AZW4 offers more advanced features and a better reading experience, supporting complex layouts, multimedia elements, and interactive features. It is suitable for creating high-quality eBook content, especially for publications requiring strict copyright protection. It is widely used in the publishing industry and personal creation, suitable for novels, textbooks, magazines, and various types of eBooks.