All about FOR Files

The FOR file type is primarily associated with Text Editor.

FOR	File extension: FOR
	File type:	source code file

What is a FOR file?

FOR files mostly belong to Text Editor. FOR files are primarily FORTRAN source code files. They are plain text files that hold code written in the FORTRAN programming language.
Sometimes these files serve other roles. For example:

They can be used as a label printer format in systems like Domino Designer.

They may hold machine setup instructions.

They sometimes work as test files such as the Emperor test file.

Even with these variations, many FOR files contain classical FORTRAN code that follows fixed-format rules. This means code placement in columns is important, a practice that many modern editors do not enforce automatically.
You can open a FOR file using a simple text editor. However, for coding or compiling, using an IDE or a FORTRAN compiler is advised. Also, check the file’s encoding (UTF-8 or UTF-16) to display the content correctly.
FilExt.com note: For further technical details, visit IBM.

How to open FOR files

You need a suitable software like Text Editor to open a FOR file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your FOR file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a FOR file directly in the browser:. Just drag the file onto this browser window and drop it.

Online FOR Text Viewer

Choose your .for file to analyze

or drag and drop it here

Online File Viewer

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FOR file format:

Why is it important to know the file format? This is the only way to find out which program to use to open the file. The initial characters of a file are called signature, sometimes also referred to as "magic bytes". The signature can be used to infer the file format. If the file extension or signature does not match the file format, errors will occur when opening or editing the file. Exact knowledge of the format is therefore important in order to solve problems occurring in files. Our analysis of the FOR files produces the following result:

As a file extension, FOR isn't very common and includes a lot of different file formats for different programs. However, the following two file formats are common:

• 7% of all FOR files use the same file format, which can be identified by the letters " Weekly SST data starts week centered on 3Jan1990 " at the beginning. The contents of these files are easily readable with a text editor. A typical file size is 79 KB. The following keywords are characteristic: 03JAN1990   23.4-0.4, Nino1+2   Nino3   Nino34   Nino4, SSTA, Week   and Weekly SST data starts week centered on 3Jan1990. A common filename is getdata_wksst8110.for. Files like these are about getdata and wksst.
• 6% of all FOR files use the same file format, which can be identified by the letters "c Begin file " at the beginning. These files are text files and can therefore be read using a text editor. The file size is in the range of 41 KB to 170 KB. Several words can almost always be found in the files, e.g. Begin file, This file, routines and contains. These files can be linked to core.

All other FOR files (87%) have different formats, such as UTF-16 (LE). They are often associated with matrix, ordner or heat. Drag & drop your file here to see the file format and a preview of your FOR file!