Three simple steps
How to use this tool?
This free online converter translates COBOL source code into Kotlin 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 Kotlin.
- Step 3
Review the result
Review, copy, or download the resulting Kotlin code from the output editor.
See it in action
Examples of COBOL to Kotlin conversion
These examples show COBOL source code and the corresponding Kotlin 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
Kotlin code
Example 2
Even or Odd
A well commented function to check if a number if odd or even.
COBOL code
Kotlin code
Language comparison
Key differences between COBOL and Kotlin
| Characteristic | COBOL | Kotlin |
|---|---|---|
| Syntax | COBOL uses a verbose and English-like syntax. | Kotlin uses a concise and modern syntax. |
| Paradigm | COBOL is primarily procedural and imperative. | Kotlin is a statically-typed, object-oriented language that also supports functional programming. |
| Typing | COBOL is statically-typed. | Kotlin is statically-typed with type inference. |
| Performance | COBOL is known for its efficiency and performance in handling large-scale business applications. | Kotlin is a modern language that aims for good performance, but it may not be as optimized for specific business use cases as COBOL. |
| Libraries and frameworks | COBOL has a limited number of libraries and frameworks available compared to modern languages like Kotlin. | Kotlin has a wide range of libraries and frameworks available, making it easier to build various types of applications. |
| Community and support | COBOL has a smaller and more specialized community compared to Kotlin. | Kotlin has a large and active community with extensive support from JetBrains and the Kotlin Foundation. |
| Learning curve | COBOL has a steeper learning curve due to its verbose syntax and specialized use cases. | Kotlin has a relatively gentle learning curve, especially for developers familiar with Java or other statically-typed languages. |
Common questions
Frequently Asked Questions
How do I convert COBOL to Kotlin?
Paste your COBOL code into the input box, confirm the languages are set to COBOL and Kotlin, and click Convert. CodeConvert AI analyzes your COBOL code and generates equivalent Kotlin code in seconds, preserving the original logic and structure.
What are the main differences between COBOL and Kotlin?
COBOL and Kotlin 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 Kotlin equivalent. See the comparison table below for the key differences between COBOL and Kotlin.
Is the converted Kotlin code accurate?
The AI produces high-quality Kotlin code that preserves the behavior of your original COBOL code and follows Kotlin conventions. It handles common patterns, data structures, and idioms for both COBOL and Kotlin. For large or performance-critical code, review and test the Kotlin output before using it in production.
Can I convert an entire COBOL project to Kotlin?
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 Kotlin. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert Kotlin back to COBOL?
Yes. CodeConvert AI converts in both directions, so you can convert Kotlin to COBOL just as easily using our Kotlin to COBOL converter. Try the Kotlin to COBOL Converter
Is the COBOL to Kotlin 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 Kotlin without an account for up to 5 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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