JSON to TypeScript

Paste JSON and instantly get TypeScript interfaces or type aliases with nested types auto-generated.

Root name

interface (vs type)Optional fields (?)Semicolons

JSON input

TypeScript output (2 types)

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

interface Root {
  id: number;
  name: string;
  email: string;
  active: boolean;
  score: number;
  tags: string[];
  address: Address;
  createdAt: string;
}