CHM to MOBI Converter

Select files for conversion or just drag and drop them to the upload area

How to convert CHM files to MOBI online?

Step 1.

Upload CHM-file

Click "Choose File" button to select a chm file on your computer. CHM file size can be up to 50 Mb.
Step 2.

Convert CHM to MOBI

Click "Convert" button to start conversion.
Step 3.

Download your MOBI

Let the file convert and you can download your MOBI file right afterwards.

Information about CHM and MOBI file formats

Name CHM MOBI
Full name CHM - Microsoft Compiled HTML Help MOBI - Mobipocket
File extension .chm .mobi, .prc
MIME type application/vnd.ms-htmlhelp application/x-mobipocket-ebook
Developed by Microsoft Mobipocket SA
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. Mobipocket SA is a French company incorporated in March 2000 that created the .mobi e-book file format and produces the Mobipocket Reader software for mobile phones, personal digital assistants (PDA) and desktop operating systems.
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. CHM files support the following features: data compression, built-in search engine, ability to merge multiple .chm help files, extended character support. The Mobipocket e-book format is based on the Open eBook standard using XHTML and can include JavaScript and frames. It also supports native SQL queries to be used with embedded databases. The Amazon Kindle's AZW format is basically just the Mobipocket format with a slightly different serial number scheme, and .prc publications can be read directly on the Kindle. The Kindle AZW format also lacks some Mobipocket features such as JavaScript.
Associated programs Sumatra PDF, HTML Help Workshop Mobipocket Reader
Wiki https://en.wikipedia.org/wiki/Microsoft_Compiled_HTML_Help https://en.wikipedia.org/wiki/Mobipocket