Home : File Types : H File

.H File Extension

FREE DOWNLOAD Open .H files for FREE with File Viewer Plus.

File TypeC/C++/Objective-C Header File

3.4 (30 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryDeveloper Files


This file is saved in a plain text format. You can open and view the contents of this file using a text editor.

What is an H file?

An H file is a header file referenced by a C, C++ or Objective-C source code document. It may contain variables, constants, and functions that are used by other files within a programming project. H files allow commonly used functions to be written only once and referenced by other source files when needed.

Programs that open H files
File Viewer Plus
Microsoft Visual Studio 2015
Eclipse IDE for C Developers
Embarcadero C++Builder
Borland C++ Compiler
BloodshedSoftware Dev-C++
Any text editor
Apple Xcode
Eclipse IDE for C Developers
GNU Compiler Collection (GCC)
MacroMates TextMate
Any text editor
Eclipse IDE for C Developers
GNU Compiler Collection (GCC)
GNU Emacs
Any text editor
Updated 8/24/2016

FileInfo - The File Extensions Database

This page contains information about the .H extension and its known file associations. Our goal is to help you understand what an H file is and how to open it.

The C/C++/Objective-C Header file type, file format description, and programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and therefore do not publish any information we have not verified.

If you would like to suggest any additions or updates to this page, please let us know!