Code (filename hello.f):
gfortran --version
Download MSYS2 and use its terminal to install the mingw-w64-ucrt-x86_64-gcc-fortran package. 2. Intel oneAPI Fortran Compiler ( ifx / ifort )
Fortran 77, finalized in 1978, was a major milestone in programming. It introduced features like block IF-ELSE statements and the DO loop, making it a powerful tool for scientific and engineering computing.
PROGRAM HELLO WRITE(*,*) 'Hello, Fortran 77 World!' STOP END fortran 77 compiler for windows 10 64-bit free download
gfortran -std=legacy myfile.f -o myprogram.exe (The -std=legacy flag tells the compiler to accept older F77 code). 2. Silverfrost FTN95 Personal Edition
Press the , type env , and select Edit the system environment variables . Click the Environment Variables... button at the bottom.
: It includes a specialized IDE (Plato) and is one of the few modern compilers that still feels like a classic Windows development tool while supporting the F77 standard. Comparison of Free Options Compatibility General use, open-source fans Excellent (F77, F90, F95+) Intel Fortran High-performance / scientific math Professional Grade Silverfrost FTN95 Beginners on Windows Specifically built for Win10/11 Open Watcom Retro-computing enthusiasts Strong F77 focus A Quick Technical Note When writing or compiling Fortran 77, remember the "Column 7" rule
This is a 32-bit compiler, but it runs fine on Windows 10 64-bit. Code (filename hello
Click the button at the bottom right.
For those needing maximum performance, Intel renamed their famous "Intel Fortran Compiler" to and made it free as part of the oneAPI toolkits.
To run the compiler from the standard Windows Command Prompt (cmd) or PowerShell, add it to your system path:
Silverfrost FTN95 is a dedicated Fortran 95 compiler that has excellent support for Fortran 77. It is specifically designed for Windows and integrates well with Visual Studio. It introduced features like block IF-ELSE statements and
Finding a dedicated Fortran 77 compiler for modern Windows 10 (64-bit) often involves using modern compilers that remain backward-compatible with the F77 standard. While many original F77 compilers were designed for DOS or 32-bit systems, the following free options are highly recommended for Windows 10 users:
Create bisect.f :
: The free "Personal Edition" displays a small banner when you run your programs. 3. Intel® oneAPI Fortran Compiler Code::Blocks
For users looking to run legacy code on a modern 64-bit Windows 10 system, several free options bridge the gap between vintage engineering software and modern operating systems. Recommended Free Compilers
Most users, open-source, standard-compliant, active development.