ConvertTOONConvertTOON

Convert JSON to Dart Classes for Flutter

Generate Dart classes with fromJson and toJson methods from JSON data. Free online tool for Flutter developers.

🔒 100% Client-side⚡ Instant🆓 Free forever

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About Convert JSON to Dart Classes for Flutter
Generate Dart classes with fromJson and toJson methods from JSON data. Free online tool for Flutter developers. This tool is part of the ConvertTOON developer tools suite, providing 40+ free online utilities for developers.
All processing happens entirely in your browser — your data never leaves your device. No sign-up required, no data collection, completely free and private.
💡 Looking for more tools? Visit ConvertTOON.com for JSON to TOON conversion, batch processing, and 40+ developer tools.
How to Convert JSON to Dart
  1. Paste your JSON data in the input panel
  2. The Dart output is generated automatically
  3. Click “Copy” to copy the result to clipboard
  4. Or click “Convert” to manually trigger conversion
Dart classes with factory fromJson constructors and toJson methods are the standard pattern for JSON handling in Flutter applications. This tool generates production-ready model classes compatible with json_serializable and manual JSON parsing.
Frequently Asked Questions
Is my data secure?
Yes. All conversion happens 100% in your browser using JavaScript. No data is ever sent to a server.
Is there a file size limit?
The tool handles files up to several MB comfortably. For very large files, consider using our batch converter or API.
Can I use this programmatically?
Yes! We offer a free REST API at /api/convert/json-to-dart and an NPM package for Node.js integration.
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