JSON to Dart

Generate Dart/Flutter model classes from JSON with fromJson and toJson methods. Handles nested objects and arrays.

fromJson/toJsonNested ObjectsFlutter Ready

How It Works

Paste JSON

Paste your JSON data in the input.

View Classes

See generated Dart classes with methods.

Copy Code

Copy the Dart code to your Flutter project.

Frequently Asked Questions

Does it handle nested JSON objects?

Yes. Nested objects are automatically converted to separate Dart classes with proper references and fromJson/toJson methods.

Are arrays supported?

Yes. Arrays are converted to List<Type> in Dart. Nested object arrays generate their own class definitions.

Can I customize the root class name?

Yes. Use the root class name input to set your preferred name. All generated classes use PascalCase naming.

Guides

Age Calculator: Calculate Exact Age Online How to Trim Audio Files Online AVIF Format: Next-Gen Image Format Guide

Browse all Developer Tools

Love this tool? Explore 999+ more

Free online tools for images, PDFs, text, code, and more. All running in your browser.

Explore All Tools

class Root { final int id; final String name; final String email; final bool active; final double score; final Address address; final List<String> tags; final List<OrdersItem> orders; Root({ required this.id, required this.name, required this.email, required this.active, required this.score, required this.address, required this.tags, required this.orders, }); factory Root.fromJson(Map<String, dynamic> json) { return Root( id: json['id'], name: json['name'], email: json['email'], active: json['active'], score: json['score'], address: Address.fromJson(json['address']), tags: json['tags'], orders: (json['orders'] as List).map((e) => OrdersItem.fromJson(e)).toList(), ); } Map<String, dynamic> toJson() { return { 'id': id, 'name': name, 'email': email, 'active': active, 'score': score, 'address': address.toJson(), 'tags': tags, 'orders': orders.map((e) => e.toJson()).toList(), }; } } class OrdersItem { final int id; final double total; OrdersItem({ required this.id, required this.total, }); factory OrdersItem.fromJson(Map<String, dynamic> json) { return OrdersItem( id: json['id'], total: json['total'], ); } Map<String, dynamic> toJson() { return { 'id': id, 'total': total, }; } } class Address { final String street; final String city; final String zip; Address({ required this.street, required this.city, required this.zip, }); factory Address.fromJson(Map<String, dynamic> json) { return Address( street: json['street'], city: json['city'], zip: json['zip'], ); } Map<String, dynamic> toJson() { return { 'street': street, 'city': city, 'zip': zip, }; } }

Frequently Asked Questions

Does it handle nested JSON objects?

Yes. Nested objects are automatically converted to separate Dart classes with proper references and fromJson/toJson methods.

Are arrays supported?

Yes. Arrays are converted to List<Type> in Dart. Nested object arrays generate their own class definitions.

Can I customize the root class name?

Yes. Use the root class name input to set your preferred name. All generated classes use PascalCase naming.

JSON to Dart

How It Works

Paste JSON

View Classes

Copy Code

Frequently Asked Questions

Explore More

Related Tools

Guides

Love this tool? Explore 999+ more

JSON to Dart

How It Works

Paste JSON

View Classes

Copy Code

Frequently Asked Questions

Explore More

Related Tools

Guides

Love this tool? Explore 999+ more