JSON to TypeScript Interface Generator

Automatically generate strongly-typed TypeScript interfaces from raw JSON payloads.

About this tool

Accelerate frontend and backend development by turning API responses directly into production-ready TypeScript types.

How to use this tool

  1. Paste your JSON data into the editor.
  2. Click Run JSON to TypeScript.
  3. Copy the generated export interface definitions into your project.

How it works

Recursively inspects JSON object structure, infers primitives and compound types, and generates modular TypeScript interfaces.

When to use this tool

  • Typing API responses in React, Next.js, and Node.js applications.
  • Creating schema models from sample payloads.

Frequently asked questions

Are nested objects converted to separate interfaces?

Yes. Nested objects are neatly split into dedicated named interfaces.

Limitations

Type inference is based on the provided sample data.

Privacy

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