Convert EPUB to AZW3 Files Online for Free.
Free online tool to convert epub to azw3 files quickly and securely. No installation required – start converting your files in just a few clicks!
Drag and drop your files here or click to upload.
0 files uploaded. 100 files remaining.
Maximum file size is 10MB
EPUB (Electronic Publication) is a widely used open standard for digital e-books and publications. EPUB files are designed to be reflowable, meaning the content adapts to different screen sizes and orientations, making it suitable for a variety of devices including e-readers, smartphones, and tablets.
EPUB supports text, images, and multimedia, and is commonly used for distributing e-books in formats that are easy to read on a wide range of devices. It’s supported by most e-book readers except Amazon Kindle, which uses its own proprietary formats.
How to open EPUB?
EPUB files can be opened with a variety of e-reader applications, such as Adobe Digital Editions, Calibre, and Apple Books.
On Windows, Calibre is a popular tool for reading and managing EPUB files, while macOS users can use Apple Books or other third-party apps like Calibre or BookReader.
Developed by: International Digital Publishing Forum (IDPF)
Initial release: 2007
Useful Links
How to convert EPUB?
EPUB files can be converted to other formats such as PDF, MOBI, or AZW3 using online conversion tools. To convert EPUB files, you can use our online converter by uploading your EPUB file and selecting your desired output format.
For e-readers that don’t support EPUB, you can convert EPUB to formats like MOBI (for Kindle) or PDF for wider compatibility with devices that don't support reflowable content.
AZW3, also known as Kindle Format 8 (KF8), is an advanced ebook format introduced by Amazon as the successor to the original AZW format. It offers enhanced formatting capabilities, including HTML5 and CSS3 support, enabling richer content display with improved layouts, text formatting, and embedded fonts.
AZW3 files provide a superior reading experience on newer Kindle devices and applications, with better support for complex layouts, tables, and interactive elements. This format maintains the DRM protection capabilities of AZW while delivering more visually appealing content. Supported extension is .azw3.
How to open AZW3?
AZW3 files can be opened on all modern Kindle devices and through the Kindle application available for Windows, Mac, iOS, and Android platforms. This ensures compatibility across the entire Amazon reading ecosystem for the best reading experience.
For non-Amazon environments, ebook management software like Calibre can open and convert AZW3 files (after DRM removal where legally permitted). Some third-party reading applications such as Freda on Windows or Moon+ Reader on Android may also support AZW3 files.
Developed by: Amazon
Initial release: 2011
Useful Links
How to convert AZW3?
Converting AZW3 files is easy with our online converter. Whether you need to transform them to more widely compatible formats like EPUB or PDF, our tool offers quick and reliable conversion. Simply upload your AZW3 ebook, select your desired output format, and click convert.
Our AZW3 conversion tool supports multiple output formats including EPUB, MOBI, PDF, and DOCX, allowing you to read your Kindle books on non-Amazon devices and applications. Experience hassle-free format transformation with our user-friendly converter.
HOW IT WORKS
How to Convert Files using Runconvert
Click inside the file drop area to upload files or drag & drop files.
Select the desired format you want to convert the file to and click the 'Convert' button.
Download link of result files will be available instantly after conversion.
You can also send a link to the converted file via email.(Optional)
Protecting Your Data is Our Top Priority
Experience unmatched security with our advanced encryption and protection systems. Your files are safe with us, every step of the way.
End-to-End Encryption
Your files are encrypted from upload to delivery with AES-256 encryption standards.
- Zero-knowledge architecture
- TLS 1.3 protocol
Secure Access Control
Multi-factor authentication and role-based access management for your entire organization.
- SAML & SSO integration
- Audit logging
Protected Storage
Redundant, encrypted storage systems with geo-distributed backups and disaster recovery.
- 99.99% uptime SLA
- Automatic failover
File Verification
Automated integrity checks and malware scanning on all files before processing.
- Real-time threat detection
- Version control
Security Certifications & Compliance
We maintain the highest industry standards for data protection
How do you like our service? Share your experience!