Three simple steps
How to use this tool?
This free online converter translates COBOL source code into C# 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 C#.
- Step 3
Review the result
Review, copy, or download the resulting C# code from the output editor.
See it in action
Examples of COBOL to C# conversion
These examples show COBOL source code and the corresponding C# 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
C# code
Example 2
Even or Odd
A well commented function to check if a number if odd or even.
COBOL code
C# code
Language comparison
Key differences between COBOL and C#
| Characteristic | COBOL | C# |
|---|---|---|
| Syntax | COBOL has a verbose and English-like syntax. | C# has a syntax similar to C and C++. |
| Paradigm | COBOL is primarily procedural and imperative. | C# supports multiple paradigms including object-oriented, procedural, and functional. |
| Typing | COBOL is statically typed. | C# is statically typed. |
| Performance | COBOL is known for its efficient performance. | C# provides good performance and optimization capabilities. |
| Libraries and frameworks | COBOL has limited libraries and frameworks compared to C#. | C# has a wide range of libraries and frameworks available. |
| Community and support | COBOL has a smaller community and limited support compared to C#. | C# has a large and active community with extensive support. |
| Learning curve | COBOL has a steeper learning curve due to its unique syntax and older documentation. | C# has a relatively moderate learning curve, especially for developers familiar with C-like languages. |
Common questions
Frequently Asked Questions
How do I convert COBOL to C#?
Paste your COBOL code into the input box, confirm the languages are set to COBOL and C#, and click Convert. CodeConvert AI analyzes your COBOL code and generates equivalent C# code in seconds, preserving the original logic and structure.
What are the main differences between COBOL and C#?
COBOL and C# 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 C# equivalent. See the comparison table below for the key differences between COBOL and C#.
Is the converted C# code accurate?
The AI produces high-quality C# code that preserves the behavior of your original COBOL code and follows C# conventions. It handles common patterns, data structures, and idioms for both COBOL and C#. For large or performance-critical code, review and test the C# output before using it in production.
Can I convert an entire COBOL project to C#?
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 C#. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert C# back to COBOL?
Yes. CodeConvert AI converts in both directions, so you can convert C# to COBOL just as easily using our C# to COBOL converter. Try the C# to COBOL Converter
Is the COBOL to C# 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 C# 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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