H File

What are H files and how to open them

Are you having problems opening a H file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a H file?

H files have multiple uses, and C/C++ Header is one of them. Read more about the other uses further down the page.

C/C++ Header File

Files that contain the .h file extension are header files used with the C or C++ programming languages. Programmers commonly know .h files as "header files". They may contain constants, function prototypes, and external variable definitions.

The header files are included by source code files that need to use the constants or functions defined in the header file. For example, if you define a text string with your company name in a header file, this constant can be used everywhere you need to display or otherwise use the company name in your source code. Should you decide to change the name later, you only have to do it in the header file and recompile it to make the change happen everywhere.

How to open H files

We have identified six H openers that are compatible with this specific type of H file.

Programs that open C/C++ Header files

Last updated: February 24, 2023

All known file formats using extension .H

While C/C++ Header File is a popular type of H-file, we know of 2 different uses of the .H file extension. Different software may use files with the same extension for different types of data.

Hrip Compressed File

Hrip was a popular file compression tool for the ZX Sinclair home computer.

While we have not verified the apps ourselves yet, our users have suggested ten different H openers which you will find listed below.

Various apps that use files with this extension

These apps are known to open certain types of H files. Remember, different programs may use H files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about H file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.