JSON to TypeScript

Auto-generate TypeScript interfaces or types from JSON

Root name:

Use type instead of interface

JSON Input

0 characters

TypeScript Output

Nested Objects

Generates separate interfaces for nested structures

Privacy Protected

All processing happens in your browser

Export Ready

Download .ts files or copy to clipboard

What is JSON to TypeScript?

Automatically generates TypeScript interface or type definitions from JSON data. Handles nested objects, arrays, null values, and mixed-type arrays. Saves time when working with API responses or configuration files in TypeScript projects.

Frequently Asked Questions

Does it handle nested objects?

Yes. Each nested object gets its own named interface, keeping the output clean and reusable.

Interface or type?

You can toggle between interface declarations and type aliases based on your project style.

Is my JSON data private?

Yes. All processing happens locally. Your API data never leaves your browser.