HPP File

What are HPP files and how to open them

Are you having problems opening a HPP file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your HPP files.

What is a HPP file?

A .HPP file is a C++ Header file.

C++ Header File (.hpp) is a plain-text source code file used in C++ programming to hold interface declarations which other C++ source files use. It is written by developers to define classes, function prototypes, constants, data types, and macros. When you include one of these files in a source (.cpp) file using the #include directive, the compiler learns how to use those declared entities without needing their implementations yet. Header files help in organizing code, allowing shared declarations to be maintained in one placeʼs interface, while implementation happens elsewhere.

Files with the .hpp extension are created by developers working in C++ rather than by machines or devices. They are never compiled on their own; instead they are included into source files during compilation. Implementation code usually resides in corresponding .cpp files, while the .hpp file provides type information and interfaces. This separation supports modularity, easier maintenance, cleaner project structure, and faster recompilation when only interfaces change.

How to open HPP files

We have identified two HPP openers that are compatible with this specific type of HPP file.

Programs that open C++ Header files

Last updated: August 4, 2026

Various apps that use files with this extension

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

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