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JSON to Dart Converter Online Free โ€” Flutter Class Generator with fromJson/toJson | DevToolBox

Free JSON to Dart converter for Flutter. Generate null-safe Dart classes with fromJson() and toJson() methods. Supports json_serializable, freezed. Instant conversion.

What is JSON to Dart?

JSON to Dart converts JSON API responses into Dart model classes with serialization methods, making Flutter development faster and type-safe.

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How to Use

  1. Paste JSON data
  2. Set root class name
  3. Choose options (null safety, etc.)
  4. Copy generated Dart code

Use Cases

  • Flutter API integration
  • Creating model classes
  • Type-safe JSON parsing
  • Rapid prototyping

FAQ

Does it support null safety?
Yes, generated classes use Dart null safety with nullable types where appropriate.
Can it handle nested JSON?
Yes, nested objects generate separate classes with proper references.