Three simple steps
How to use this tool?
This free online converter translates C source code into Swift in three simple steps.
- Step 1
Add your C code
Type, paste, or upload the C 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 C to Swift conversion
These examples show C 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.
C code
Swift code
Example 2
Even or Odd
A well commented function to check if a number if odd or even.
C code
Swift code
Language comparison
Key differences between C and Swift
| Characteristic | C | Swift |
|---|---|---|
| Syntax | C uses a procedural syntax with a focus on low-level programming. | Swift uses a modern syntax that is more expressive and easier to read and write. |
| Paradigm | C supports procedural programming. | Swift supports both procedural and object-oriented programming. |
| Typing | C is statically typed. | Swift is statically typed with type inference. |
| Performance | C is known for its high performance and efficiency. | Swift is designed to be fast and has comparable performance to C. |
| Libraries and frameworks | C has a wide range of libraries and frameworks available. | Swift has a growing ecosystem of libraries and frameworks, but it is not as extensive as C's. |
| Community and support | C has a large and established community with extensive support. | Swift has a growing community with good support, but it is not as large as C's. |
| Learning curve | C has a steep learning curve, especially for beginners. | Swift has a relatively low learning curve, especially for those familiar with other modern programming languages. |
Common questions
Frequently Asked Questions
How do I convert C to Swift?
Paste your C code into the input box, confirm the languages are set to C and Swift, and click Convert. CodeConvert AI analyzes your C code and generates equivalent Swift code in seconds, preserving the original logic and structure.
What are the main differences between C and Swift?
C 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 C construct to its closest Swift equivalent. See the comparison table below for the key differences between C and Swift.
Is the converted Swift code accurate?
The AI produces high-quality Swift code that preserves the behavior of your original C code and follows Swift conventions. It handles common patterns, data structures, and idioms for both C and Swift. For large or performance-critical code, review and test the Swift output before using it in production.
Can I convert an entire C project to Swift?
You can convert C 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 C 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 C?
Yes. CodeConvert AI converts in both directions, so you can convert Swift to C just as easily using our Swift to C converter. Try the Swift to C Converter
Is the C 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 C 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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