Kotlin to Java Converter

Convert Kotlin code to Java instantly with our online tool. Perfect for developers needing Java compatibility.

Kotlin Code
Java Code

Class Conversion

Code Style

Advanced

Key Features

Modern Kotlin Support

Converts Kotlin-specific features like data classes, extension functions, and null safety to Java equivalents.

Android Compatible

Special handling for Android-specific Kotlin code and common patterns.

Smart Analysis

Identifies Kotlin patterns that need special conversion for Java compatibility.

How to Convert Kotlin to Java

  1. Paste your Kotlin code in the left panel or upload a .kt file
  2. Click "Convert to Java" to transform your code
  3. Copy or download the resulting Java code from the right panel
  4. Use the options panel to customize the conversion style

Supported Kotlin Features

  • Data classes and sealed classes
  • Extension functions and properties
  • Null safety and elvis operator
  • Lambda expressions and higher-order functions
  • Coroutines and suspend functions