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JSON to TypeScript

Paste JSON and instantly get TypeScript interfaces or type aliases with nested types

Con la confianza de más de 10k desarrolladores

Root name

JSON Input

TypeScript Output

interface Root {
  id: number;
  name: string;
  email: string;
  isActive: boolean;
  roles: string[];
  address: {
    street: string;
    city: string;
    zip: string;
  };
  scores: number[];
}

How it works

• Paste any valid JSON and get a TypeScript interface or type alias.
• Nested objects become inline types. Arrays are inferred from the first element.
• Change the root name to customize the top-level identifier.
• Everything runs locally in your browser — no data is sent anywhere.