Conversion of FORTRAN90 to FORTRAN77

F90_TO_F77 is a FORTRAN90 program which assists in the conversion of a FORTRAN90 source code file to the FORTRAN77 format.

Only a few modifications are made; the user will surely have to go into the file and make further modifications by hand. The changes made by the program include:


f90_to_f77 input.f90 output.f


The computer code and data files made available on this web page are distributed under the GNU LGPL license.


F90_TO_F77 is available in a FORTRAN90 version.

Related Data and Programs:

F77_TO_F90, a FORTRAN90 program which converts a FORTRAN77 file to FORTRAN90 format, by Michael Metcalfe;

Source Code:

Examples and Tests:

List of Routines:

You can go up one level to the FORTRAN90 source codes.

Last revised on 25 June 2013.