Having problems opening a H file?

We have programs that can open or convert your H files.

Opening H files

Did your computer fail to open a H file? We explain what H files are and recommend software that we know can open or convert your H files.

What is a H file?

Files that contain the .h file extension are normally header files used with the C or C++ programming languages. .h files are commonly known by programmers 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 later decide to change the name, you only have to do it in the header file and recompile to make the change take effect everywhere.

Try a universal file viewer

Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.

About File Extension H

File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about the H file format or software that uses files with the H suffix, please do get in touch - we would love hearing from you.