CHM to EPUB Converter

Batch convert chm files to epub format online for free

Choose files or drag & drop them here.
Only you have access to your files.
All files will be deleted after one hour.

How to convert CHM files to EPUB online?

Step-by-step guide to convert chm to epub using AnyConv. It works on PC (Windows, Mac, Linux) and mobile devices (iPhone, Android).

Upload CHM-file

Drag and drop your CHM file into the upload area. The maximum file size is 100 MB.


Click "Convert" to change chm to epub. The conversion usually takes a few seconds.

Download your EPUB

Now you can download the EPUB file. The download link only works on your device.


  • ❓ How can I convert files from CHM to EPUB?
    First you need to add file for conversion: drag and drop your CHM file or click the "Choose File" button. Then click the "Convert" button. When CHM to EPUB conversion is completed, you can download your EPUB file.
  • ⏱️ How long does it take to convert CHM to EPUB?
    Document conversion is pretty fast. You can change CHM to EPUB in a few seconds.
  • 🛡️ Is it safe to convert CHM to EPUB on AnyConv?
    Of course! We delete uploaded files immediately, and converted ones after 1 hour. No one has access to your files. File conversion (including CHM to EPUB) is absolutely safe.
  • 💻 Can I convert CHM to EPUB on Mac OS or Linux?
    Yes, you can use AnyConv on any operating system that has a web browser. Our CHM to EPUB converter works online and does not require software installation.

Information about CHM and EPUB file formats

🔸 File format CHM EPUB
🔸 Full name CHM - Microsoft Compiled HTML Help EPUB - Electronic Publication
🔸 File extension .chm .epub
🔸 MIME type application/ application/epub+zip
🔸 Developed by Microsoft International Digital Publishing Forum
🔸 Type of format Document file format Ebook file format
🔸 Description Microsoft Compiled HTML Help is a Microsoft proprietary online help format consisting of a collection of HTML pages, an index, and other navigation tools. The files are compressed and deployed in a binary format with the extension .chm for Compiled HTML. The format is often used for software documentation. EPUB is an ebook file format with the extension .epub that can be downloaded and read on devices like smartphones, tablets, computers, or e-readers. It is a free and open standard published by the International Digital Publishing Forum (IDPF). The term is short for electronic publication and is sometimes styled ePub.
🔸 Technical details Help is delivered as a binary file with the .chm extension. It contains a set of HTML files, a hyperlinked table of contents, and an index file. The file format has been reverse-engineered, and documentation of it is freely available. In addition, CHM files support the following features: data compression, built-in search engine, ability to merge multiple .chm help files, extended character support. EPUB is the most widely supported vendor-independent XML-based (as opposed to PDF) e-book format. An EPUB file is a ZIP archive that contains, in effect, website-including HTML files, images, CSS style sheets, and other assets. It also contains metadata. EPUB 3 is the latest version. By using HTML5, publications can contain video, audio, and interactivity, just like websites in web browsers.
🔸 File conversion CHM conversion EPUB conversion
🔸 Associated programs Sumatra PDF, HTML Help Workshop Adobe InDesign, calibre, LaTeX, Genebook, epubcheck.
🔸 Wiki