To use the compiler from the standard Windows Command Prompt (CMD) or PowerShell, you must add it to your System PATH.
Download the free editor and install the Modern Fortran extension for syntax highlighting, debugging tools, and code completion features. If you want to customize your setup further, let me know:
This is the most popular open-source choice. It is part of the GNU Compiler Collection (GCC) and fully supports Fortran 77 alongside modern standards. How to Get It : You can download it through , which provides a 64-bit environment for Windows. fortran 77 compiler for windows 10 64-bit free download
For most users, is the best free Fortran 77 compiler for Windows 10 64-bit – it’s modern, fast, and fully compatible. If you prefer a simpler setup with an editor, Silverfrost FTN77 still works.
Download the MinGW-w64 installer from SourceForge and install it with the settings described in Section 1. After installation, verify by typing gfortran --version in Command Prompt. For the latest and most up-to-date toolchain, advanced users may prefer the MSYS2 installation method described earlier, which provides access to the most recent GCC versions. To use the compiler from the standard Windows
Create a new text file named hello.f (or hello.for ) and paste the following standard FORTRAN 77 code:
your .f file in any text editor (Notepad++ , VS Code, or even Notepad). It is part of the GNU Compiler Collection
For users seeking a retro, lightweight, all-in-one package, is an Integrated Development Environment (IDE) specifically designed for FORTRAN 77. It traditionally bundles G77 (the older GNU Fortran 77 compiler).
If everything is configured correctly, you will see the greeting printed on the screen.
For Windows 10 64-bit, the recommended way to install gfortran is via (Minimalist GNU for Windows, 64-bit). This approach provides a native Windows port of the GNU toolchain without requiring emulators like Cygwin.
Excellent compatibility with classic IBM and Microsoft extensions of the 1980s and 90s.