Convert JSON to C# Class Online
Generating C# model classes from a JSON payload by hand is tedious and error-prone when working with large API responses. This tool produces clean C# class definitions with properly typed properties and JsonProperty attributes from any JSON. Nested objects become separate classes, arrays become List<T>, and primitive types are correctly mapped to string, int, bool, double, and nullable variants. Run it entirely in your browser without sending any data to a server. It is a significant time-saver when building .NET API clients, deserializing external payloads, or scaffolding new model layers.
json input
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c# classesREADY
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FAQ
- Are JsonProperty attributes added?
- Yes. Each property includes a [JsonProperty("originalKey")] attribute for use with Newtonsoft.Json, ensuring correct deserialization even when C# property names differ.
- How are nullable values handled?
- Fields that appear null in the JSON are typed as nullable (e.g., string?) and wrapped with the appropriate nullable annotation.
- Does it support System.Text.Json?
- The output uses Newtonsoft.Json annotations by default. The property names and structure are compatible with System.Text.Json with minor attribute changes.