4TH file extension
The table below provides useful information about the .4th file extension. It answers questions such as:
- What is the .4th file?
- What program do I need to open a .4th file?
- How can the .4th file be opened, edited or printed?
- How can I convert .4th files to another format?
Table of Contents
- ✅ Forth Source Code
- 🔄 .4th file converters
- 🚫 .4th file related errors
We hope you find this page helpful and a valuable resource!
0 extension(s) and 1 alias(es) found in database
✅ Forth Source Code

FS file is a Forth Source Code. Forth is an imperative stack-based computer programming language and programming environment.
Other types of files may also use the .4th file extension.
🚫 The .4th file extension is often given incorrectly!
According to the searches on our site, these misspellings were the most common in the past year:
Is it possible that the filename extension is misspelled?
We found the following similar file extensions in our database:
🔴 Can't open a .4th file?
When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:
Windows cannot open this file:
example.4th
To open this file, Windows needs to know what program you want to use to open it...
If you don't know how to set the .4th file association, check the FAQ.
🔴 Can I change the extension of files?
Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.
If you have helpful information about the .4th file extension, write to us!