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Input Source

⚡ Advanced Developer Toolbox Transform, Mock, Security & API Client
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Class / Model to JSON: Keys:
Mock Preset: Count:
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Paste JSON Payload

Paste raw JSON, drag & drop a .json file, or choose a workflow below:

○ Waiting for JSON | Lines: 0 · Chars: 0 · Size: 0 B · Depth: 0
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Invalid JSON

Generated Output

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Ready to generate
Paste JSON in the input panel and hit Beautify or Generate to see results here.

JSON to C# — Generate .NET Classes from Any API Response

Working with a REST API in C# means you need a class that matches the JSON shape exactly. Paste the response here and get a clean C# class with [JsonPropertyName] attributes from System.Text.Json — ready to pass straight into JsonSerializer.Deserialize<T>().

Nested objects become separate classes. JSON arrays become List<T>. Numbers are mapped to int, long, or double based on the values in your payload. The output works with .NET 6, .NET 7, .NET 8, and .NET Core without modification.

❓ Frequently Asked Questions

Is processing on json-to-csharp.html private and secure?

Yes. All JSON processing, parsing, and code generation happen 100% locally inside your browser sandbox. No server roundtrips or third-party tracking occur.

Is JSON Workbench free to use for JSON to C# Class Generator Online?

Yes, JSON Workbench is completely free for commercial and personal developer use with zero registration or payload limits.

Can I copy or download the generated output?

Yes! You can instantly copy the output code to your clipboard or download it as a structured file.

🧰 Complementary Developer Tools

⚡ Class to JSON Converter 📖 JSON to OpenAPI Spec 🗄️ JSON to SQL DDL 📝 JSON Formatter