Three simple steps
How to use this tool?
This free online converter translates Ruby source code into Kotlin in three simple steps.
- Step 1
Add your Ruby code
Type, paste, or upload the Ruby 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 Ruby to Kotlin conversion
These examples show Ruby 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.
Ruby code
Kotlin code
Example 2
Even or Odd
A well commented function to check if a number if odd or even.
Ruby code
Kotlin code
Language comparison
Key differences between Ruby and Kotlin
| Characteristic | Ruby | Kotlin |
|---|---|---|
| Syntax | Ruby has a more flexible and concise syntax compared to Kotlin. | Kotlin has a more strict and concise syntax compared to Ruby. |
| Paradigm | Ruby is a dynamically-typed, object-oriented language with support for functional programming. | Kotlin is a statically-typed, object-oriented language with support for functional programming. |
| Typing | Ruby is dynamically-typed. | Kotlin is statically-typed. |
| Performance | Ruby is slower compared to Kotlin due to its dynamic nature. | Kotlin is faster compared to Ruby due to its static nature. |
| Libraries and frameworks | Ruby has a vast collection of libraries and frameworks, including Ruby on Rails, Sinatra, and Hanami. | Kotlin has a growing collection of libraries and frameworks, including Spring Boot, Ktor, and Micronaut. |
| Community and support | Ruby has a large and active community with many resources and support available. | Kotlin has a growing community with increasing resources and support available. |
| Learning curve | Ruby has a relatively easy learning curve due to its flexible syntax and beginner-friendly nature. | Kotlin has a moderate learning curve due to its strict syntax and advanced features. |
Common questions
Frequently Asked Questions
How do I convert Ruby to Kotlin?
Paste your Ruby code into the input box, confirm the languages are set to Ruby and Kotlin, and click Convert. CodeConvert AI analyzes your Ruby code and generates equivalent Kotlin code in seconds, preserving the original logic and structure.
What are the main differences between Ruby and Kotlin?
Ruby 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 Ruby construct to its closest Kotlin equivalent. See the comparison table below for the key differences between Ruby and Kotlin.
Is the converted Kotlin code accurate?
The AI produces high-quality Kotlin code that preserves the behavior of your original Ruby code and follows Kotlin conventions. It handles common patterns, data structures, and idioms for both Ruby and Kotlin. For large or performance-critical code, review and test the Kotlin output before using it in production.
Can I convert an entire Ruby project to Kotlin?
You can convert Ruby 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 Ruby 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 Ruby?
Yes. CodeConvert AI converts in both directions, so you can convert Kotlin to Ruby just as easily using our Kotlin to Ruby converter. Try the Kotlin to Ruby Converter
Is the Ruby 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 Ruby to Kotlin 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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