JSON to TypeScript (Interfaces)

Paste a sample JSON and get ready-to-use TypeScript interfaces, with inferred types (string, number, boolean, arrays and nested objects). Choose the root type name and copy or download the result.

Input JSON

Root type name

Example JSON

TypeScript interfaces

Paste a JSON to generate its TypeScript interfaces.

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Frequently asked questions

How does it name nested types?+

Each nested object generates its own interface named after the parent plus the capitalized property name. If there are collisions, a number is added.

What does it do with arrays of objects?+

It infers one interface per element using the Item suffix (e.g., RootObjectItem).

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