JSON to TypeScript Interface

Paste JSON and get an exported TypeScript interface or type. Nested objects and arrays are inferred automatically. Free TS generator - instant, no signup.

Features

Custom interface name
Nested object inference
Array type detection
One-click copy

How to use JSON to TS

1
Paste sample JSON.
2
Set an interface name if you want.
3
Copy the generated TypeScript.

Examples

Simple object

Input

{"id":1,"name":"Ada"}

Output

export interface Root {
 id: number;
 name: string;
}

About JSON to TS

JSON to TypeScript Interface helps you scaffold types from API responses. Infer string, number, boolean, arrays, and nested object shapes without leaving the browser.