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JSON to TypeScript

Generate TypeScript interfaces from JSON.

How to Use This Tool

  1. Paste JSON.
  2. Set the root interface name.
  3. Click Generate Types.

Learn More About JSON to TypeScript

Why generate TypeScript types?

TypeScript interfaces improve reliability by making API responses and data models explicit.

About JSON to TypeScript

Generating TypeScript interfaces from JSON saves time and reduces errors. This tool infers types to help you build strongly-typed applications quickly.
Create TS interfaces from JSON data.
Runs in browser
Yes
Output
TypeScript
Nested types
Yes

Examples

Generate an interface

Create TypeScript definitions from JSON.
Input
{"id":1,"name":"Ava"}
Output
export interface Root {
  id: number;
  name: string;
}

Features

Type inference

Infers types for nested objects and arrays.

Named interfaces

Choose a root interface name.

Copy-ready output

Use the result directly in TS projects.

Use Cases

  • Type API responses.
  • Generate models for frontend apps.
  • Quickly scaffold TypeScript types.

Frequently Asked Questions

Related Tools

Generate types for Go or Python using related tools.