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JSON to Dart Converter Online - Flutter Class Generator

Free online JSON to Dart converter. Generate Flutter class definitions with fromJson/toJson methods.

JSON to Dart

Convert JSON to Dart/Flutter classes

Features

  • Automatic type detection (String, int, double, bool, List, Map)
  • Null safety support with ? notation
  • Generated fromJson factory constructor
  • Generated toJson method for serialization
  • Support for nested objects and arrays
  • Customizable class name
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