CHM file format

Compiled HTML Help

CHM is Microsoft's compiled help format, also used for e-books and manuals. It opens on Windows but rarely on phones or e-readers.

Convert CHM to EPUB

Where CHM files open

Windows

Opens in the built-in help viewer.

Yes

Mac

There is no built-in viewer.

No

E-readers

Kindle and Kobo do not open CHM.

No

Convert CHM to

14 formats

Document

Ebook

Other ebook formats