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About F Files

An .f file is a source code file that contains program instructions written in the Fortran programming language. F files typically include statements, variables, functions, and subroutines used to perform calculations, process numerical data, and carry out other computational tasks. The exact syntax and formatting can vary depending on the Fortran version, as older files often use fixed-format source code while newer versions support free-format code.

IBM developed Fortran in the 1950s, and it became widely used for scientific computing and engineering because of its strengths in numerical calculations. Scientists, engineers, and researchers have used Fortran to develop simulations, analyze experimental data, model physical systems, and perform complex mathematical computations. You may encounter .f files when maintaining scientific software, working with high-performance computing applications, studying older programs, or developing numerical software with a Fortran compiler.

You can open and view the contents of an .f file with a source code editor or plain text editor. However, to compile and run the code, you generally need a compatible Fortran compiler, such as GNU Fortran (gfortran), or a development environment that supports Fortran.