JSON to TypeScript — Generate Interfaces from JSON

Convert JSON data to TypeScript interfaces automatically. Supports nested objects, arrays, and multiple interface generation.

Root name

JSON Input

TypeScript Output

interface Root {
  id: number;
  name: string;
  email: string;
  isActive: boolean;
  age: number;
  address: Address;
  tags: string[];
  orders: OrdersItem[];
}

interface OrdersItem {
  id: number;
  total: number;
  items: number;
}

interface Address {
  street: string;
  city: string;
  zip: string;
}

JSON to TypeScript Conversion

This tool analyzes JSON data and generates corresponding TypeScript interfaces. It infers types from values (string, number, boolean), handles nested objects as separate interfaces, and detects array item types.

When to Use This

Use this when integrating with APIs — paste a JSON response to instantly get TypeScript types. This saves time and ensures type safety when working with external data sources.

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