Three simple steps
How to use this tool?
This free online converter translates C source code into Kotlin 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 Kotlin.
- Step 3
Review the result
Review, copy, or download the resulting Kotlin code from the output editor.
See it in action
Examples of C to Kotlin conversion
These examples show C 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.
C code
Kotlin code
Example 2
Even or Odd
A well commented function to check if a number if odd or even.
C code
Kotlin code
Language comparison
Key differences between C and Kotlin
| Characteristic | C | Kotlin |
|---|---|---|
| Syntax | C has a simple syntax with a focus on low-level memory manipulation. | Kotlin has a modern and concise syntax with a focus on readability and ease of use. |
| Paradigm | C is a procedural language with some support for object-oriented programming. | Kotlin is a modern, multi-paradigm language that supports both object-oriented and functional programming. |
| Typing | C is a statically typed language with weak typing. | Kotlin is a statically typed language with strong typing. |
| Performance | C is a high-performance language that is often used for system-level programming. | Kotlin is a high-performance language that is often used for Android app development. |
| Libraries and frameworks | C has a limited number of libraries and frameworks compared to other languages. | Kotlin has a growing ecosystem of libraries and frameworks, particularly for Android development. |
| Community and support | C has a large and active community with many resources available online. | Kotlin has a growing community with increasing support from major tech companies like Google. |
| Learning curve | C has a steep learning curve, particularly for beginners. | Kotlin has a relatively gentle learning curve, particularly for those with experience in Java or other object-oriented languages. |
Common questions
Frequently Asked Questions
How do I convert C to Kotlin?
Paste your C code into the input box, confirm the languages are set to C and Kotlin, and click Convert. CodeConvert AI analyzes your C code and generates equivalent Kotlin code in seconds, preserving the original logic and structure.
What are the main differences between C and Kotlin?
C 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 C construct to its closest Kotlin equivalent. See the comparison table below for the key differences between C and Kotlin.
Is the converted Kotlin code accurate?
The AI produces high-quality Kotlin code that preserves the behavior of your original C code and follows Kotlin conventions. It handles common patterns, data structures, and idioms for both C and Kotlin. For large or performance-critical code, review and test the Kotlin output before using it in production.
Can I convert an entire C project to Kotlin?
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 Kotlin. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert Kotlin back to C?
Yes. CodeConvert AI converts in both directions, so you can convert Kotlin to C just as easily using our Kotlin to C converter. Try the Kotlin to C Converter
Is the C 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 C 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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