.FTN File Extension

Fortran Source Code File

Developer N/A
3.2  |  6 Votes

What is an FTN file?

An FTN file is a source code file written in Fortran, a programming language often used for numerical computation. It is saved in a plain text format and may be opened and edited with any text editor. FTN files may store code for an entire program or a program module.

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Screenshot of a .ftn file in Microsoft Visual Studio Code 1.33
FTN file open in Microsoft Visual Studio Code 1.33

You will most likely only encounter an FTN source code file if you are a scientific programmer. While FTN files can be opened and edited with any text editor, programmers typically edit FTN files with source code editors that provide Fortran syntax capabilities, such as Photran and Apple Xcode.

After modifying FTN files, programmers compile the source code with a Fortran compiler, which translates it to machine code that can run on a computer as a program. Some examples of Fortran compilers include Absoft Pro Fortran and Intel Parallel Studio XE.

NOTE: The .ftn file extension is shorthand for Fortran. Other files that store Fortran source code include .F, .F90, and .FOR files.

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Programs that open FTN files

Flowton Diagram File

Developer Flowton
2.7  |  3 Votes

Flowchart created by Flowton, a free diagramming application; may include shapes, connections, text labels, and other components; can be used for software design, infrastructure diagramming, business process modeling, or other purposes.

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FTN files are saved in an XML format.

Programs that open FTN files


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