lookup> .for

.FOR·File Extension

FOR Data & Text — A .for file is a FOR Data & Text. It is a text-based data format widely used for configuration files, data interchange and API payloads.

Data & Texttext/x-fortran

Quick facts

Extension.for

File typeFOR Data & Text

MIME typetext/x-fortran

CategoryData & Text

Charset—

Compressible—

What is .for

What is a .for file?

A .for file is a FOR Data & Text. It is a text-based data format widely used for configuration files, data interchange and API payloads.

In the mime-db registry it maps to text/x-fortran. When serving .for over HTTP, set the Content-Type header as shown in Developer info below.

Related entities: it maps to text/x-fortran and is used by Formatted, Forth among others — and is delivered over HTTP via the Content-Type header.

How to open .for files

Use VS Code or Notepad++ to open and edit .for files.
Any text editor (Notepad, VS Code) can inspect the raw content as text.

Developer info

When served over HTTP, responses should set the following header:

Content-Type: text/x-fortran

Common software that reads/writes .for:

VS CodeNotepad++Sublime Textjq

Relation chain

.forextension of

format

FOR Data & Textserved as

mime type

text/x-fortransent via header

http header

Related extensions

Related MIME types

Related programming languages

Common uses

Configuration files
Data interchange between systems
API request and response payloads
Logs and data exports

How to edit .for files

Open the file with VS Code, make your changes and save.
Most editors preserve the original formatting and encoding — avoid changing the charset.

How to create .for files

Create a new file and save it with the .for extension, or export this format from VS Code.

Frequently asked questions

What programs can open .for files?

Common options include VS Code, Notepad++, Sublime Text. You can also open many of these files with built-in viewers or a browser.

How do I create a .for file?

Create a new file in any text editor or the app that owns the format and save it with the .for extension.

What is the relationship between .for and the text/x-fortran MIME type?

text/x-fortran is the media type identifier used for .for files during network transfer (for example in the HTTP Content-Type header).

Sources & standards

Updated 2026-08-18

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