JSON to C# Class Generator

Convert JSON payloads to C# classes with List<T> and proper PascalCase property names

Root class:

Input

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Output

Output will appear here...

What is JSON to C# Class Generator

Last reviewed: April 18, 2026

JSON (JavaScript Object Notation) is a lightweight, human-readable data format used almost everywhere on the web for APIs, config files, and log output.

JSON to C# Class Generator infers types from your JSON and emits idiomatic C# classes with PascalCase property names, `List<T>` for arrays, and nested classes for nested objects.

Perfect for scaffolding DTOs in ASP.NET, Unity, or any .NET project consuming JSON APIs.

Why use it

Scaffold DTOs for ASP.NET services.
Port TypeScript models to .NET.
Generate JSON decode targets for Unity.
Teach C# property conventions.
Accelerate prototype services.

Features

PascalCase properties
List<T> for JSON arrays
Nested class support
System.Collections.Generic using
JSON to C# Class Generator is handled entirely in-browser

How to use JSON to C# Class Generator

Paste JSON. Any object or array-of-objects.
Set root class. Via toolbar.
Run. Copy the C# classes.

Example (before/after)

JSON

{ "accountId": "A-7001", "balance": 1450.75, "features": ["wire", "ach"] }

C#

using System.Collections.Generic;

public class Account
{
    public string AccountId { get; set; }
    public decimal Balance { get; set; }
    public List<string> Features { get; set; }
}

Common errors

Attribute annotations

No [JsonPropertyName] attributes are emitted.

Fix: Add them manually if you need non-default names.

Nullable reference types

C# 8+ nullable references aren't emitted by default.

Fix: Add `?` to reference types manually.

FAQ

Does it add JSON attributes?

No — PascalCase properties only. Add [JsonPropertyName] manually for snake_case JSON.

Are nested objects generated?

Yes — each nested object becomes its own class.

Does it use records?

Not by default — classes with auto-properties.

Is it C# 10+ friendly?

Yes — compiles on every recent .NET version.

Is input uploaded?

No — C# classes are emitted locally in your browser from the pasted JSON.

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Pair with other POJO generators and JSON tools. You can also browse the full POJO & Schema Generators category for more options.

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