The f77 file extension indicates Fortran 77 programming language source code. Fortran was developed by IBM in the 1950s for science and engineering. f77 files contain code compiled by the FORTRAN 77 c...
The f77 file extension indicates Fortran 77 programming language source code. Fortran was developed by IBM in the 1950s for science and engineering. f77 files contain code compiled by the FORTRAN 77 compiler into executable programs.
The format is now deprecated. Newer versions replaced f77. Files with f77 extension are no longer commonly used or supported.
Programs that open f77 files include the Intel Fortran Compiler. Users with f77 files are most commonly on Windows 10 in the United States using Chrome.
To open an f77 file on your computer, associate the extension with a compatible program. If that does not work, update the program or redownload the f77 file. Scan files from unknown sources to check for corruption or viruses.
GNU Fortran Compiler (gfortran)