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Document Format

CHM Converter — Free Online

Convert Compiled HTML Help files to and from other formats. Fast, free, no registration required.

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Convert to CHM

PDF to CHM→DOCX to CHM→DOC to CHM→TXT to CHM→RTF to CHM→ODT to CHM→

Convert from CHM

CHM to PDF→CHM to DOCX→CHM to DOC→CHM to TXT→CHM to RTF→CHM to ODT→

What is CHM?

CHM (Compiled HTML Help) is Microsoft's proprietary help file format introduced with Windows 98. It compiles HTML pages, images, and an index into a single compressed archive viewed with the Windows Help viewer.

Format Details

Full Name
Compiled HTML Help
Extension
.chm

Key Features

  • Compiled HTML
  • Search index
  • Table of contents
  • Windows Help viewer

Frequently Asked Questions

Upload your file, select CHM as the output format, and click Convert. Your converted file will be ready to download in seconds.
You can convert most document formats to CHM, including PDF, DOCX, DOC, TXT, RTF, and more.
Yes! You can convert up to 5 files per day completely free. No registration required.