Three simple steps
How to use this tool?
This free online converter translates Kotlin source code into Gleam 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 Gleam.
- Step 3
Review the result
Review, copy, or download the resulting Gleam code from the output editor.
Language comparison
Key differences between Kotlin and Gleam
| Characteristic | Kotlin | Gleam |
|---|---|---|
| Syntax | C-like, concise, modern, similar to Java and Swift. | Erlang/ML-inspired, indentation-based, minimalistic, functional. |
| Paradigm | Multi-paradigm (object-oriented, functional). | Purely functional. |
| Typing | Statically typed, type inference, null safety. | Statically typed, strong type inference, no nulls. |
| Performance | Runs on JVM or compiles to native/JavaScript; performance close to Java. | Compiles to Erlang or JavaScript; inherits Erlang VM performance, optimized for concurrency. |
| Libraries and frameworks | Extensive libraries, mature frameworks (Spring, Ktor, Android). | Limited libraries, can use Erlang/Elixir ecosystem, fewer dedicated frameworks. |
| Community and support | Large, active community, strong corporate backing (JetBrains, Google). | Small but growing community, mostly open-source contributors. |
| Learning curve | Easy for Java/Swift developers, moderate for others. | Steeper for those new to functional programming or Erlang ecosystem. |
Common questions
Frequently Asked Questions
How do I convert Kotlin to Gleam?
Paste your Kotlin code into the input box, confirm the languages are set to Kotlin and Gleam, and click Convert. CodeConvert AI analyzes your Kotlin code and generates equivalent Gleam code in seconds, preserving the original logic and structure.
What are the main differences between Kotlin and Gleam?
Kotlin and Gleam 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 Gleam equivalent. See the comparison table below for the key differences between Kotlin and Gleam.
Is the converted Gleam code accurate?
The AI produces high-quality Gleam code that preserves the behavior of your original Kotlin code and follows Gleam conventions. It handles common patterns, data structures, and idioms for both Kotlin and Gleam. For large or performance-critical code, review and test the Gleam output before using it in production.
Can I convert an entire Kotlin project to Gleam?
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 Gleam. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert Gleam back to Kotlin?
Yes. CodeConvert AI converts in both directions, so you can convert Gleam to Kotlin just as easily using our Gleam to Kotlin converter. Try the Gleam to Kotlin Converter
Is the Kotlin to Gleam 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 Gleam 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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