Files with fs extension can be found as source codes written in the Microsoft Visual F# programming language.

There are 6 other file types using
the FS file extension!

empty icon.fs - FlexiSIGN document

empty icon.fs - FormSaver data

empty icon.fs - Gforth Forth stream source file

empty icon.fs - NetBSD system data

fs icon.fs - Mac OS X file system plug-in

empty icon.fs - RMCProfile data

FS file extension - Microsoft Visual F# source code

What is fs file? How to open fs files?

File type specification:

Source code and script file type icon Source code and script file type

fs file icon: fs filetype icon

File extension fs is associated with Microsoft Visual F# (F Sharp) development software. The .fs files are source code files created in this language.

F# (pronounced "F Sharp") is a functional programming language for the .NET Framework. It combines the succinct, expressive, and compositional style of functional programming with the runtime, libraries, interoperability, and object model of .NET. F# is a variant of the ML language. F# is designed for use with Microsoft's .NET library and tools.

Microsoft Visual Studio can compile the F# source code into dll or exe program executables.

Updated: April 18, 2024

The default software associated to open fs file:

Microsoft Visual Studio icon

Microsoft Corporation logoMicrosoft Visual Studio  Multiplatform software

Company or developer:
Microsoft Corporation

Microsoft Visual Studio is an integrated development environment (IDE) used to create applications for Microsoft Windows, Windows Mobile, .NET Framework, Silverlight as well as dynamic websites and web applications. Visual Studio is available for Windows and Mac.

Help how to open:

Use any suitable text editor or any specialised source code editor to open and work with the .fs files.

How to convert:

There is no way how to convert .fs source code files to other formats, but they can be compiled to exe or dll files.

Related links:

About F Sharp at Wikipedia

List of software applications associated to the .fs file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open fs file, edit fs file, convert fs file, view fs file, play fs file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting fs files.

Software that open fs file - Microsoft Visual F# source code

Programs supporting the exension fs on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open fs file action.

Apple macOS / Mac OS X:

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