Convert MOBI to FB2 Online — Free & Fast | AnyConv

MOBI to FB2 Converter

Quickly convert multiple mobi files to fb2 — free & online.

Drag & drop your files here or click to upload

How to convert MOBI to FB2 online

Follow these simple steps to convert mobi files to fb2 using AnyConv. It works on all devices — Windows, Mac, Linux, iPhone, Android.

Upload your MOBI file

Drag & drop your file into the upload area. You can also click to select it manually. Max file size: 100 MB.

Start converting

Hit the “Convert” button to turn your MOBI into FB2. The process usually takes just a few seconds.

Download your FB2

Once ready, download your converted file instantly. The download link is private and only works on your device.

What is a MOBI file?

MOBI is a legacy eBook format developed by Mobipocket, later acquired by Amazon. It supports complex content like bookmarks, annotations, and DRM, and was used extensively on early Kindle devices.

Although Amazon has transitioned to newer formats like AZW3 and KFX, MOBI files are still supported on older Kindles and widely used for distribution due to their compatibility with many reading apps.

How to open MOBI files

MOBI files can be opened using Amazon Kindle devices, Calibre, and Mobipocket Reader. Many third-party eReader apps on Android and Windows also support MOBI.

If needed, use AnyConv to convert MOBI to EPUB, AZW3, or PDF for greater compatibility.

Key facts about MOBI

  • Full name: Mobipocket eBook
  • Extension: .mobi
  • MIME type: application/x-mobipocket-ebook
  • Developed by: Mobipocket / Amazon
  • Initial release: 2000

Useful links and resources

What is a FB2 file?

FB2 (FictionBook 2.0) is an XML-based eBook format that originated in Russia and is designed to preserve the semantic structure of a book. It focuses on separating content from presentation, which allows consistent formatting across different devices.

FB2 files are compact, easy to convert, and widely supported in Russian-speaking countries. They are especially popular for fiction and literary works.

How to open FB2 files

FB2 files can be opened using apps like CoolReader, FBReader, and Calibre. They are especially common in Russia and Eastern Europe.

Use AnyConv to convert FB2 files into EPUB, MOBI, or PDF formats for broader compatibility with other eReaders.

Key facts about FB2

  • Full name: FictionBook 2.0
  • Extension: .fb2
  • MIME type: application/xml
  • Developed by: Russian eBook Community
  • Initial release: 2004

Useful links and resources

Convert from MOBI

Need to change your MOBI files to a different format? Below are all the available tools to help you turn MOBI into the format you need.

Convert to FB2

Want to get a file in FB2 format? Choose the original format you’re starting with — AnyConv can quickly convert dozens of file types into FB2.

❓ Frequently Asked Questions

Answers to common questions about converting MOBI to FB2
  • Do I need to register to convert MOBI files?
    Not at all! You can convert MOBI to FB2 without signing up or installing anything.
  • Is it safe to convert MOBI to FB2 on AnyConv?
    Absolutely. All MOBI and FB2 files are securely handled and automatically deleted after 1 hour. Nobody can access your data.
  • Will the quality change after converting MOBI to FB2?
    We do our best to preserve the original quality during MOBI to FB2 conversion. The result is accurate and clean.
  • How long does it take to convert MOBI to FB2?
    Most conversions from MOBI to FB2 take just a few seconds — even for larger files.
  • Can I upload more than one MOBI file?
    Yes, batch conversion is supported. You can convert multiple MOBI files to FB2 at once — fast and easy.
  • What browsers support MOBI to FB2 conversion?
    All modern browsers! Chrome, Firefox, Safari, Edge — AnyConv runs online and supports converting MOBI to FB2 on any platform.
MOBI to FB2 – User Rating
4.8 (405 votes)
Please convert and download a file before leaving a rating.