Three simple steps
How to use this tool?
This free online converter translates COBOL source code into Swift 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 Swift.
- Step 3
Review the result
Review, copy, or download the resulting Swift code from the output editor.
See it in action
Examples of COBOL to Swift conversion
These examples show COBOL source code and the corresponding Swift 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
Swift code
Example 2
Even or Odd
A well commented function to check if a number if odd or even.
COBOL code
Swift code
Language comparison
Key differences between COBOL and Swift
| Characteristic | COBOL | Swift |
|---|---|---|
| Syntax | COBOL uses a verbose and English-like syntax. | Swift uses a concise and modern syntax. |
| Paradigm | COBOL is primarily procedural and imperative. | Swift is a multi-paradigm language, supporting both procedural and object-oriented programming. |
| Typing | COBOL is statically typed. | Swift is statically typed with type inference. |
| Performance | COBOL is known for its efficiency and performance in handling large-scale business applications. | Swift is designed for performance and is known for its speed. |
| Libraries and frameworks | COBOL has a limited number of libraries and frameworks available. | Swift has a wide range of libraries and frameworks available, especially for iOS and macOS development. |
| Community and support | COBOL has a smaller and more specialized community with limited support. | Swift has a large and active community with extensive support from Apple and the developer community. |
| Learning curve | COBOL has a steep learning curve, especially for developers with no prior experience in mainframe programming. | Swift has a relatively gentle learning curve, especially for developers familiar with modern programming languages. |
Common questions
Frequently Asked Questions
How do I convert COBOL to Swift?
Paste your COBOL code into the input box, confirm the languages are set to COBOL and Swift, and click Convert. CodeConvert AI analyzes your COBOL code and generates equivalent Swift code in seconds, preserving the original logic and structure.
What are the main differences between COBOL and Swift?
COBOL and Swift 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 Swift equivalent. See the comparison table below for the key differences between COBOL and Swift.
Is the converted Swift code accurate?
The AI produces high-quality Swift code that preserves the behavior of your original COBOL code and follows Swift conventions. It handles common patterns, data structures, and idioms for both COBOL and Swift. For large or performance-critical code, review and test the Swift output before using it in production.
Can I convert an entire COBOL project to Swift?
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 Swift. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert Swift back to COBOL?
Yes. CodeConvert AI converts in both directions, so you can convert Swift to COBOL just as easily using our Swift to COBOL converter. Try the Swift to COBOL Converter
Is the COBOL to Swift 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 Swift 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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