JSON to Dart Converter
Generate Dart model classes from JSON with fromJson and toJson methods. Perfect for Flutter development.
Auto-Generate Classes
Create Dart classes with fromJson/toJson
Type-Safe
Flutter-ready with proper type definitions
Free Forever
Unlimited conversions at no cost
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Generate Flutter-Ready Dart Classes from JSON
Convert JSON to Dart model classes with our free online tool. Automatically generates Dart classes with fromJson factory constructors and toJson methods, perfect for Flutter mobile app development. Handle API responses, local storage, and data serialization effortlessly.
Perfect for Flutter Development
Flutter developers frequently work with JSON data from REST APIs, Firebase, or local storage. Our converter generates production-ready Dart classes that follow Flutter best practices, including proper type definitions, null-safety support, and serialization methods. Save hours of manual coding and reduce errors.
Auto-Generated Methods
Every generated Dart class includes a fromJson factory constructor for deserializing JSON and a toJson method for serialization. This makes it easy to parse API responses and convert objects back to JSON for network requests or storage operations.
Type-Safe Development
Our converter intelligently maps JSON types to Dart types: strings become String, numbers become int or double, booleans become bool, and arrays become List<T>. Nested objects are handled with proper Map<String, dynamic> or custom class types, ensuring type safety throughout your Flutter application.
Frequently Asked Questions
Paste your JSON data into the input box and click "Convert". Our tool automatically generates Dart model classes with proper type definitions, fromJson factory constructors, and toJson methods. Perfect for Flutter development!
Yes! Every generated Dart class includes a fromJson factory constructor for deserializing JSON and a toJson method for serialization. This makes it easy to work with APIs and JSON data in Flutter/Dart.
JSON strings become String, numbers become int or double, booleans become bool, arrays become List<T>, and objects become Map<String, dynamic> or nested classes. Null values are typed as dynamic.
Yes! The converter handles nested JSON objects and creates appropriate class structures. Complex nested JSON is transformed into well-structured Dart classes with proper type safety.
The generated code uses Dart's modern syntax with required parameters in constructors. You can easily modify the output to add nullable types (?) where needed for your specific use case.
Absolutely! The generated Dart classes are perfect for Flutter apps. Use them for API responses, local storage, state management, and any JSON data handling in your Flutter projects.
JSON arrays are converted to List<T> where T is the inferred type. For arrays of objects, you'll get List<Map<String, dynamic>> or List<YourClass> depending on the structure.
The generated code follows Dart best practices and is production-ready. However, always review and test the code, especially for complex JSON structures or specific business logic requirements.