TypeScript to Kotlin Converter

Convert your TypeScript code to Kotlin instantly in your browser

Free online tool for converting TypeScript to Kotlin with 100% client-side processing

TypeScript Code

Kotlin Code

Ready to convert

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Instant Conversion

Convert TypeScript to Kotlin code in real-time with our advanced conversion engine.

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Privacy First

All processing happens in your browser. Your code never leaves your computer.

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Mobile Friendly

Works perfectly on desktop, tablet, and mobile devices with responsive design.

About TypeScript to Kotlin Conversion

The TypeScript to Kotlin converter is a powerful online tool designed to help developers seamlessly transition their TypeScript codebase to Kotlin. Whether you're migrating a project, learning Kotlin, or exploring cross-platform development, this tool simplifies the conversion process.

Why Convert from TypeScript to Kotlin?

TypeScript and Kotlin share many similarities as statically-typed languages that compile to JavaScript and JVM respectively. Converting from TypeScript to Kotlin offers several advantages:

Native Android Development: Kotlin is the preferred language for Android app development
Interoperability: Seamless integration with existing Java codebases
Conciseness: Kotlin reduces boilerplate code compared to Java
Safety: Null safety features prevent NullPointerExceptions
Multiplatform: Kotlin Multiplatform allows sharing code between platforms

How the Converter Works

Our TypeScript to Kotlin converter uses advanced parsing and transformation algorithms to accurately convert your code:

Lexical Analysis: The converter tokenizes your TypeScript code
Syntactic Analysis: It builds an Abstract Syntax Tree (AST) of your code structure
Transformation: The AST is transformed to match Kotlin syntax and conventions
Code Generation: Valid Kotlin code is generated from the transformed AST

Supported TypeScript Features

Our converter handles a wide range of TypeScript constructs:

                // Interfaces
                interface User {
                id: number;
                name: string;
                }

                // Classes
                class UserService {
                private users: User[] = [];

                addUser(user: User): void {
                this.users.push(user);
                }
                }

                // Functions
                function greet(name: string): string {
                return `Hello, ${name}!`;
                }

                // Arrow Functions
                const add = (a: number, b: number): number => a + b;

Generated Kotlin Equivalents

The converter produces idiomatic Kotlin code:

                // Data classes for interfaces
                data class User(
                val id: Int,
                val name: String
                )

                // Classes
                class UserService {
                private val users: MutableList = mutableListOf()

                    fun addUser(user: User) {
                    users.add(user)
                    }
                    }

                    // Functions
                    fun greet(name: String): String {
                    return "Hello, $name!"
                    }

                    // Lambda expressions
                    val add = { a: Int, b: Int -> a + b }

Frequently Asked Questions

Is my code safe when using this converter?

Yes, absolutely! All processing happens entirely in your browser. Your code is never sent to any server, ensuring complete privacy and security.

What TypeScript features are supported?

Our converter supports most common TypeScript features including interfaces, classes, functions, arrow functions, generics, and more. Complex type mappings and advanced generics may require manual adjustments.

How accurate is the conversion?

The converter provides a solid foundation for your Kotlin code, but manual review is recommended. Complex TypeScript patterns may need adjustment to follow Kotlin best practices.

Do I need to install anything?

No installation is required. The converter runs entirely in your browser using modern web technologies.

Can I convert large files?

Yes, the converter can handle reasonably large files. However, extremely large files may impact performance. For best results, convert files in manageable chunks.

TypeScript vs Kotlin: Key Differences

While TypeScript and Kotlin share many similarities, understanding their differences is crucial for effective conversion:

Type Systems

Both languages feature strong, static typing, but Kotlin's type system includes null safety built-in, eliminating the need for explicit null checks in most cases.

Class Definitions

Kotlin's class syntax is more concise. Primary constructors and properties can be defined directly in the class header:

                // TypeScript
                class Person {
                name: string;
                age: number;

                constructor(name: string, age: number) {
                this.name = name;
                this.age = age;
                }
                }

                // Kotlin
                class Person(val name: String, val age: Int)

Function Syntax

Kotlin offers more flexible function definitions with features like infix functions and extension functions:

                // TypeScript
                function add(a: number, b: number): number {
                return a + b;
                }

                // Kotlin
                fun add(a: Int, b: Int): Int = a + b