json-to-go.input
json-to-go.output
using System;
using System.Collections.Generic;
using Newtonsoft.Json;
public class Profile
{
[JsonProperty("age")]
public int Age { get; set; }
[JsonProperty("city")]
public string? City { get; set; }
}
public class RootObject
{
[JsonProperty("id")]
public int Id { get; set; }
[JsonProperty("name")]
public string? Name { get; set; }
[JsonProperty("active")]
public bool Active { get; set; }
[JsonProperty("score")]
public double Score { get; set; }
[JsonProperty("tags")]
public List<string>? Tags { get; set; }
[JsonProperty("profile")]
public Profile Profile { get; set; }
}About JSON to C#
Consuming JSON APIs in .NET means writing many C# classes by hand. This tool parses your sample JSON locally and generates complete C# classes: field names become PascalCase, nested objects become separate classes, arrays infer to List<T>, with nullable reference types and Newtonsoft.Json / System.Text.Json JsonProperty attributes. Nothing is uploaded.
How to Use
- Open the JSON to C# tool page
- Enter or paste your data into the input area
- View the real-time results and use the copy button to get the output
Use Cases
- Consume REST APIs — Convert API JSON to C# classes for HttpClient/RestSharp deserialization.
- EF Core entities — Generate entity classes from database JSON samples for Entity Framework Core.
- Unity config modeling — Create type-safe C# models for Unity game configuration JSON.
- Azure Function inputs — Quickly generate input model classes for Azure Function HTTP Triggers.
FAQ
What is the difference between Newtonsoft and System.Text.Json?
Newtonsoft.Json uses [JsonProperty]; System.Text.Json uses [JsonPropertyName]. Choose based on your project dependency.
How are null values handled?
null infers to object?. Use a non-null sample for more precise types.
What are nullable reference types?
A C# 8+ feature. When enabled, reference type fields like string are marked nullable (string?) and the compiler checks for nulls.
How are nested objects handled?
Each nested object becomes its own class - clean and reusable.
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