Three simple steps
How to use this tool?
This free online converter translates Kotlin source code into Objective-C in three simple steps.
- Step 1
Add your Kotlin code
Type, paste, or upload the Kotlin code you want to translate.
- Step 2
Convert the code
Click Convert to translate the source code into Objective-C.
- Step 3
Review the result
Review, copy, or download the resulting Objective-C code from the output editor.
See it in action
Examples of Kotlin to Objective-C conversion
These examples show Kotlin source code and the corresponding Objective-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.
Kotlin code
Objective-C code
Example 2
Even or Odd
A well commented function to check if a number if odd or even.
Kotlin code
Objective-C code
Language comparison
Key differences between Kotlin and Objective-C
| Characteristic | Kotlin | Objective-C |
|---|---|---|
| Syntax | Kotlin has a more concise and expressive syntax compared to Objective-C. | Objective-C has a more verbose and complex syntax compared to Kotlin. |
| Paradigm | Kotlin is a statically-typed programming language that supports both object-oriented and functional programming paradigms. | Objective-C is a dynamically-typed programming language that primarily supports object-oriented programming paradigm. |
| Typing | Kotlin has a strong static type system that helps catch errors at compile-time. | Objective-C has a weak dynamic type system that allows for more flexibility but can lead to runtime errors. |
| Performance | Kotlin is known for its performance and can be comparable to Java. | Objective-C is known for its performance and is often used for resource-intensive applications. |
| Libraries and frameworks | Kotlin has a growing ecosystem of libraries and frameworks, including compatibility with existing Java libraries. | Objective-C has a mature ecosystem of libraries and frameworks, especially for iOS and macOS development. |
| Community and support | Kotlin has a growing community and is backed by JetBrains, which provides strong support and regular updates. | Objective-C has a large community and is supported by Apple, with extensive documentation and resources. |
| Learning curve | Kotlin has a relatively low learning curve, especially for developers familiar with Java. | Objective-C has a steeper learning curve, especially for developers without prior experience in C-based languages. |
Common questions
Frequently Asked Questions
How do I convert Kotlin to Objective-C?
Paste your Kotlin code into the input box, confirm the languages are set to Kotlin and Objective-C, and click Convert. CodeConvert AI analyzes your Kotlin code and generates equivalent Objective-C code in seconds, preserving the original logic and structure.
What are the main differences between Kotlin and Objective-C?
Kotlin and Objective-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 Kotlin construct to its closest Objective-C equivalent. See the comparison table below for the key differences between Kotlin and Objective-C.
Is the converted Objective-C code accurate?
The AI produces high-quality Objective-C code that preserves the behavior of your original Kotlin code and follows Objective-C conventions. It handles common patterns, data structures, and idioms for both Kotlin and Objective-C. For large or performance-critical code, review and test the Objective-C output before using it in production.
Can I convert an entire Kotlin project to Objective-C?
You can convert Kotlin 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 Kotlin to Objective-C. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert Objective-C back to Kotlin?
Yes. CodeConvert AI converts in both directions, so you can convert Objective-C to Kotlin just as easily using our Objective-C to Kotlin converter. Try the Objective-C to Kotlin Converter
Is the Kotlin to Objective-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 Kotlin to Objective-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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