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HLP CHM
File conversion

Convert HLP to CHM

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Is it possible to convert HLP to CHM?
Yes - HLP converts to CHM.

The standard modern migration: import the WinHelp .hlp (or its .hpj/.rtf source) into a help tool and recompile to HTML Help (.chm), which still opens on Windows 11. Decompilers can also recover topics from a .hlp when the source is lost.

Also to CHM: ZHELP · HDX · GID

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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How to convert HLP to CHM

Converting a .HLP file to .CHM lets you open the content in software that prefers the .CHM format, though some details may change compared with the original. We are still putting together the list of programs that handle .HLP files.

A full step-by-step guide for this conversion is on the way; the information above is drawn straight from our database.

About these formats

.HLP Windows Help File (WinHelp)

A HLP file is a compiled Windows Help (WinHelp) file used by programs from the Windows 3.0 era through Windows XP. Windows 10 and 11 no longer include the WinHelp engine, so double-clicking…

Open .HLP details →
.CHM Microsoft Compiled HTML Help file

A CHM file is a Microsoft Compiled HTML Help file - a single compressed bundle of HTML pages, images, and a searchable index, used for Windows software manuals and e-books. On Windows,…

Open .CHM details →