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JSON to C# Class

JSON & Data Format · Free Online Tool

Convert JSON to C# class definitions.

By CoderNewbie TeamLast updated: 2026-09-20

Success

JSON Input155 chars

C# Output

387 chars

using System.Collections.Generic;

public class Root
{
    public string Name { get; set; }
    public long Age { get; set; }
    public bool Active { get; set; }
    public double Score { get; set; }
    public Address Address { get; set; }
    public List<object> Skills { get; set; }
}

public class Address
{
    public string City { get; set; }
    public string Zip { get; set; }
}

Type Inference

long, double, string, bool — chosen from your values.

Nested Classes

Objects become named POCOs, recursively.

Auto-Properties

Idiomatic `} properties for every field.

How to Use JSON to C# Class

1Paste your input data (JSON, CSV, XML, YAML, etc.) into the input field.
2The tool automatically processes and validates your data.
3Review the converted output in the result panel.
4Copy or download the converted result.

Features

✓100% free — no signup, no subscription, no ads
✓Runs entirely in your browser — data never leaves your device
✓Fast and lightweight — instant results
✓Cross-platform — works on desktop, tablet, and mobile

Frequently Asked Questions

Can I convert large JSON files?

Yes, but performance depends on your browser. Files up to 10MB are generally handled well.

Do you validate the input?

Yes, most tools validate input and show error messages with line numbers for invalid data.

Can I download the converted result?

Yes, most conversion tools provide a download button for the output file.

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Learn the concept

Learn the concept

Understand the programming ideas behind this tool.