JSON to Dart Model Generator
Generate null-safe Dart/Flutter model classes with fromJson and toJson from JSON.
Types are inferred from the sample. Fields missing in some array items become optional; null values become nullable.
Ready-made models for Flutter
In Flutter apps, turning API JSON into Dart objects means writing fromJson and toJson for every model class. The JSON to Dart generator writes that code for you.
Generated code
- An immutable class with a const constructor for every object
- Null-safe field types
- A fromJson factory constructor and a toJson method
- Recursive conversion for nested objects and lists of objects
No extra packages
The output is plain Dart code; you don't need json_serializable, freezed or build_runner. Copy it straight into your project. Your JSON is processed in the browser.
How to use JSON to Dart Model Generator
- Paste sample JSON data.
- Set the root class name.
- Review the generated Dart classes.
- Add the code to your Flutter project.
Why use this tool?
Automates repetitive model writing in mobile development and prevents serialisation mistakes.
FAQ
Does it work without code generation packages?
Yes. The output is plain Dart code and needs neither json_serializable nor build_runner.
How are field names converted?
JSON keys are converted to Dart-style camelCase; fromJson and toJson use the original keys.
Does it generate copyWith?
No, it generates the core fromJson and toJson methods.
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