JSON to C# Class Converter

JSON

using System.Text.Json.Serialization;
using System.Collections.Generic;

public class Address
{
    [JsonPropertyName("city")]
    public string City { get; set; }

    [JsonPropertyName("zip")]
    public int Zip { get; set; }
}

public class Root
{
    [JsonPropertyName("id")]
    public int Id { get; set; }

    [JsonPropertyName("name")]
    public string Name { get; set; }

    [JsonPropertyName("active")]
    public bool Active { get; set; }

    [JsonPropertyName("score")]
    public double Score { get; set; }

    [JsonPropertyName("tags")]
    public List<string> Tags { get; set; }

    [JsonPropertyName("address")]
    public Address Address { get; set; }
}

// Root type: Root

JSON to C# Class Converter — Free Online Tool

Converts JSON into C# class definitions with PascalCase properties and inferred types (string, int, double, bool, DateTime, nested classes, and List<T>), ready to paste into a .NET project — useful for building DTOs for REST clients and deserializing API responses.

How to use the JSON to C# Class Converter

Open the tool above — it runs entirely in your browser, so your input never leaves this page.
Paste or type your input into the field, then press the relevant button (e.g. Encode / Decode, Generate, or Convert).
Copy the result from the output area with the copy button orCtrl/Cmd + C.
No signup, no upload, and no tracking — repeat as often as you need.

Frequently asked questions

Is the JSON to C# Class Converter free to use?

Yes. The JSON to C# Class Converter is completely free, with no signup, no ads inside the tool, and no hidden limits.

Does the JSON to C# Class Converter upload my data?

No. The JSON to C# Class Converter processes everything locally in your browser. Your input is never sent to a server, so it stays private even on shared devices.

Does the JSON to C# Class Converter work offline?

After the page loads, the JSON to C# Class Converter runs entirely in your browser, so it keeps working without a network connection.

Free & private — why use this JSON to C# Class Converter

The JSON to C# Class Converter runs 100% client-side in your browser. Your data is never uploaded to a server, no account is required, and the tool is completely free. It works offline once the page has loaded and is part of a growing collection of privacy-first developer utilities.

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