Free JSON to C# Class Generator Online
Convert JSON data to C# classes with properties automatically. Supports nested objects, arrays, and nullable types. Download .cs files instantly for free.
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What is JSON to C#?
JSON to C# is a free online tool that generates C# class definitions from JSON data. It creates properly typed properties with PascalCase naming and optional JsonProperty attributes for seamless JSON serialization with Newtonsoft.Json or System.Text.Json. Ideal for .NET developers working with REST APIs.
How to Use JSON to C#
- Paste your JSON data into the input area
- Set the root class name and optional namespace
- Click 'Convert' to generate C# class definitions
- Copy the classes or download as a .cs file
JSON to C# Features
- Generates C# classes with auto-properties
- PascalCase property names following C# conventions
- Nested objects generate separate classes
- Arrays map to List<T> with correct types
- Optional namespace declaration
JSON to C# FAQ
Are JsonProperty attributes included?
The tool generates clean C# properties. You can add [JsonProperty] attributes manually if your JSON keys differ from C# naming conventions.
How are nullable types handled?
Fields that appear null in JSON are typed as nullable (e.g., string? or int?) to handle optional values safely.
Is my data secure?
Yes! All conversion happens in your browser. Your data is never sent to any server.