JSON to TypeScript - Generate Types from JSON
Generate TypeScript interfaces from JSON data. Speed up your TypeScript development with auto-generated types.
About JSON to TypeScript Conversion
TypeScript interfaces provide type safety when working with JSON data. Instead of manually writing interfaces for API responses, this tool generates them automatically from example JSON.
Simply paste a sample JSON response from your API, and get fully typed interfaces ready to use in your TypeScript project. This eliminates typos and provides IntelliSense support in your editor.
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Frequently Asked Questions
The converter analyzes your JSON structure and generates appropriate TypeScript types. Strings become 'string', numbers become 'number', booleans become 'boolean', and nested objects get their own interfaces.
Arrays are typed based on their contents. Homogeneous arrays (all same type) get simple array types like 'string[]'. Mixed arrays get union types like '(string | number)[]'.
The root interface is named 'Root' by default, and nested interfaces are named based on their property names. You can easily rename them in the generated code.