DART · SWIFT · KOTLIN · DATA CLASSES

JSON to Model Generator

Paste any JSON and instantly get data classes for Dart (Flutter), Swift (iOS), or Kotlin (Android). Nested objects, arrays, and null safety handled automatically — 100% private.

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Try a sample: user profile | product

terminalGenerated Code

Your model code will appear here...

info The generator creates nested classes for nested objects, handles arrays of primitives and objects, and uses nullable types by default. Choose your target language and paste your JSON to get started.

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100% Private & Secure: All processing happens locally in your browser. Your JSON data is never uploaded to any server.

How to Use This Generator

1

Paste Your JSON

Copy any JSON response from your API or file and paste it into the text area.

2

Choose Language & Class Name

Select Dart, Swift, or Kotlin and give your root class a name (default is MyModel).

3

Copy & Use

Click "Generate Code", then copy the output or download it as a file. Paste into your project and start using it immediately.

Frequently Asked Questions

Yes, the generated classes use nullable types where appropriate to handle missing JSON fields gracefully.

For Dart: paste into your Flutter project. For Swift: add the struct to your project. For Kotlin: paste into your Android app and use with JSON parsing (e.g., Gson or kotlinx.serialization).

Absolutely. All processing is client‑side. Your JSON never leaves your browser.

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