JSON to Kotlin Data Class Converter | Kotlin Model Generator Online

Convert JSON to Kotlin data classes instantly. Generate type-safe models with Gson or Moshi annotations, nullable types, and proper camelCase naming for Android and KMP projects. Designed specifically for developers and professionals, this free online converter runs entirely in your browser to process tasks quickly and securely. Enjoy unlimited usage with no data tracking and no registration required.

Also known as: json to kotlin converter · kotlin data class generator · json to kotlin data class · android kotlin json model · kotlin gson model generator · moshi annotation kotlin · json to kotlin online free · json to kotlin · kotlin json model · android json to kotlin

JSON Input

Kotlin Output

Class Options

Root Class Name

Data class

Generate data class with equals/hashCode/toString

Use val (immutable)

Use val instead of var for properties

Serialization

Gson @SerializedName

Add Gson annotations for mismatched keys

Moshi @Json

Use Moshi annotations instead of Gson

Nullable types

Make all properties nullable with ?

About JSON to Kotlin Data Class Converter

Convert JSON to Kotlin data classes instantly. Generate type-safe Kotlin models with Gson or Moshi annotations, nullable types, and proper camelCase naming for Android and KMP projects.

Key Features

Generate Kotlin data classes from JSON with correct types
Automatic camelCase naming from snake_case keys
Gson @SerializedName and Moshi @Json annotation support
Nullable type support with Kotlin ? syntax
Nested objects and arrays with separate class generation
Toggle between val (immutable) and var (mutable) properties
Upload JSON files or paste directly
Download generated Kotlin code as .kt file

Use Cases

Android app development with Retrofit and Gson/Moshi
Kotlin Multiplatform (KMP) shared data models
Creating type-safe API response models
Spring Boot Kotlin backend development
Converting API documentation to Kotlin classes

Related Keywords

json to kotlin

json to kotlin data class

kotlin data class generator

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kotlin json model

android json to kotlin

kotlin pojo generator

Privacy & Security

All processing happens locally in your browser. Your data never leaves your computer, ensuring complete privacy and security.

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Frequently asked questions

What is JSON to Kotlin Data Class Converter used for?

Convert JSON to Kotlin data classes instantly. Generate type-safe models with Gson or Moshi annotations, nullable types, and proper camelCase naming for Android and KMP projects.

Is JSON to Kotlin Data Class Converter free to use?

Yes. JSON to Kotlin Data Class Converter is completely free with no usage limits, and there is no paid tier required to use it.

Do I need an account to use JSON to Kotlin Data Class Converter?

No. JSON to Kotlin Data Class Converter works immediately in your browser with no signup, login, or email address required.

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