Three simple steps
How to use this tool?
This free online converter translates COBOL source code into F# in three simple steps.
- Step 1
Add your COBOL code
Type, paste, or upload the COBOL code you want to translate.
- Step 2
Convert the code
Click Convert to translate the source code into F#.
- Step 3
Review the result
Review, copy, or download the resulting F# code from the output editor.
See it in action
Examples of COBOL to F# conversion
These examples show COBOL source code and the corresponding F# translation. Generated results can vary as AI models are updated.
Example 1
Is String Palindrome
Program that checks if a string is a palindrome or not.
COBOL code
F# code
Example 2
Even or Odd
A well commented function to check if a number if odd or even.
COBOL code
F# code
Language comparison
Key differences between COBOL and F#
| Characteristic | COBOL | F# |
|---|---|---|
| Syntax | COBOL uses a verbose and English-like syntax with a fixed format. | F# uses a concise and expressive syntax inspired by ML languages. |
| Paradigm | COBOL is primarily procedural and imperative. | F# is a multi-paradigm language that supports functional, imperative, and object-oriented programming. |
| Typing | COBOL is statically typed with weak typing. | F# is statically typed with strong typing. |
| Performance | COBOL is known for its efficiency and performance in handling large-scale business applications. | F# is a high-performance language that can leverage the power of the .NET runtime. |
| Libraries and frameworks | COBOL has a limited set of libraries and frameworks compared to modern languages. | F# has access to a wide range of libraries and frameworks in the .NET ecosystem. |
| Community and support | COBOL has a smaller and more specialized community with limited support. | F# has an active and growing community with good support from Microsoft and the F# Software Foundation. |
| Learning curve | COBOL has a steep learning curve due to its verbose syntax and outdated concepts. | F# has a moderate learning curve, especially for developers familiar with functional programming. |
Common questions
Frequently Asked Questions
How do I convert COBOL to F#?
Paste your COBOL code into the input box, confirm the languages are set to COBOL and F#, and click Convert. CodeConvert AI analyzes your COBOL code and generates equivalent F# code in seconds, preserving the original logic and structure.
What are the main differences between COBOL and F#?
COBOL and F# differ in syntax, type system, standard libraries, and common idioms, so copying code line for line usually will not compile. The converter maps each COBOL construct to its closest F# equivalent. See the comparison table below for the key differences between COBOL and F#.
Is the converted F# code accurate?
The AI produces high-quality F# code that preserves the behavior of your original COBOL code and follows F# conventions. It handles common patterns, data structures, and idioms for both COBOL and F#. For large or performance-critical code, review and test the F# output before using it in production.
Can I convert an entire COBOL project to F#?
You can convert COBOL files one at a time by pasting each file's code. For a full migration, convert each file and then review how classes, dependencies, and project structure map from COBOL to F#. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert F# back to COBOL?
Yes. CodeConvert AI converts in both directions, so you can convert F# to COBOL just as easily using our F# to COBOL converter. Try the F# to COBOL Converter
Is the COBOL to F# converter free, and do I need to install anything?
Yes, it is free and runs in your browser with nothing to install and no IDE extension required. You can convert COBOL to F# without an account for up to 2 conversions per day. Sign in for free for higher limits.
What are the benefits of signing in?
Signing in unlocks CodeConvert AI's Pro converter with more powerful AI models, a built-in chat assistant, code execution, saved conversion history, and personal notes. Every free account includes 5 credits and supports up to 25,000 characters of input per conversion, with no credit card required.
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