JSON to Code
Paste sample JSON and get typed TypeScript interfaces, C# classes or Java records.
Sample JSON
export interface Root {
id: number;
name: string;
isActive: boolean;
tags: string[];
address: Address;
projects: Projects[];
}
export interface Address {
city: string;
zip: string;
}
export interface Projects {
title: string;
year: number;
}This tool generates ready-to-use class/model definitions - in TypeScript, C#, or Java - directly from a sample piece of JSON data, inferring field names and types automatically. It saves the tedious, error-prone work of manually writing out a matching class definition every time you need to consume a new API response shape.
Frequently asked questions
Types are inferred from the values present in your sample JSON, so they're accurate to that specific example - fields that could be null, optional, or have different types in other API responses won't be reflected unless your sample includes those variations.
TypeScript, C#, and Java class/interface definitions are supported, covering common backend and frontend use cases.
Yes - it's meant as a working starting point; review naming conventions and nullability to match your project's specific style before relying on it long-term.