JSON to C# Class Converter | DTO Model Generator
Paste JSON and generate C# POCO classes with typed properties, nested models, arrays, nullable fields, and a custom root class name.
Sample JSON Input
{ get; set; } Generated C# Classes
Turn API JSON into C# Models
Generate C# POCO class definitions from sample JSON responses, including nested objects, arrays, booleans, numbers, strings, and nullable-looking fields.
Review Property Names and Types
Use realistic API samples before copying the generated DTOs. Mixed arrays, optional fields, date strings, and inconsistent casing may need manual cleanup in your C# project.
Best Use Cases for This Converter
Start API clients, request models, response models, and quick prototypes faster, then adapt namespaces, attributes, validation rules, and nullable annotations inside your IDE.
About This Tool
JSON to C# Converter generates the corresponding C# class definitions from a JSON object with the correct properties and data types. It speeds up API integration by eliminating manual model class creation.
When to Use It
Use this when consuming a REST API and you need to create the C# model class for the response, when building a .NET application that deserialises JSON, or when translating a Postman response into a typed object.
How to Use
- Paste your sample JSON into the input area.
- Click Convert to generate the C# classes.
- Review the class names and data types.
- Copy the classes into your project.
Frequently Asked Questions
Does it handle nested objects?
Yes. Nested JSON objects generate nested C# classes. Arrays of objects produce List<ClassName> properties.
Can I customise the root class name?
Set the root class name before converting. Nested class names are derived from the JSON property names.
Does it use Newtonsoft.Json or System.Text.Json attributes?
You can choose the serialisation library. Newtonsoft adds [JsonProperty] attributes and System.Text.Json uses [JsonPropertyName].