JSON to TypeScript
Convert JSON objects to TypeScript interfaces or type aliases. Supports nested objects, arrays, and all primitive types.
Output:
Root name:
Frequently Asked Questions
How does JSON to TypeScript conversion work?▾
The tool parses your JSON, infers types for each value, and generates TypeScript interface or type alias declarations with proper nesting.
Does it handle nested objects and arrays?▾
Yes. Nested objects become separate interfaces, and arrays get typed as T[] where T is inferred from the array items.
Is my JSON data sent to a server?▾
No. All conversion happens entirely in your browser using JavaScript. Nothing is transmitted.