I can provide tailored troubleshooting steps or recommend an IDE setup based on your goals. Share public link
Do you need help linking like LAPACK or BLAS?
Users who also need Unix tools, make, autotools. fortran 77 compiler for windows 10 64-bit free download
Run it:
PROGRAM HELLO WRITE(*,*) 'Hello, World!' END I can provide tailored troubleshooting steps or recommend
gfortran -o hello hello.f hello.exe
Regardless of which compiler you choose, Windows 10 64-bit has excellent options for compiling and maintaining Fortran 77 code in 2025. With gfortran as the recommended path, you can confidently transition legacy F77 projects to modern Windows environments while preserving their numerical integrity and performance. Run it: PROGRAM HELLO WRITE(*,*) 'Hello, World
hello.exe
The compiler can be downloaded from: https://ftp.sunet.se/mirror/archive/ftp.sunet.se/pub/simtelnet/msdos/fortran/bcf7713b.zip . To use it on Windows 10, install first, then run BC-FORTRAN 77 within the DOSBox environment.
A commercial-quality Fortran compiler with a free "Personal Edition". Strong F77 support plus extensions.