On-Line Fortran F77 – F90 Converter

This free service, offered by Polyhedron Solutions, allows you to submit your Fortran 77 source code (up to 100 lines), and to view the result of processing it using SPAG – part of Polyhedron’s plusFORT toolset.

A very small subset of the customization options available in the full plusFORT package is available using the drop-down boxes.

Paste your code into the F77 code window, choose your conversion
options and press SUBMIT. The converted code will appear in the F90 code window and a log
of the conversion process can be viewed by pressing the ‘show output log’ button.

F77 code
Run Type:
Output Source Form:Computed GOTO:

Relational Operators:

F90 code