JSON to TypeScript

Convert JSON to TypeScript interfaces instantly

Your data stays in your browser

JSON Input

Paste or type JSON to convert

TypeScript Output
TypeScript output will appear here...

Pro Tips

  • Paste an API response directly. The converter handles any valid JSON structure, including arrays of objects, deeply nested data, and mixed types.
  • Use the Zod toggle to generate runtime validation schemas alongside your TypeScript types. Zod catches malformed API data before it hits your code.
  • Toggle optional properties when generating types for partial responses, PATCH request bodies, or form state where fields may be undefined.
  • Inline nested types for quick, self-contained type definitions. Separate interfaces (the default) are better for large, reusable types.

Last updated: March 2026

This is an alternative URL for the JSON to TypeScript Converter. All features are identical: interface and type alias generation, nested object handling, array inference, Zod schema output, and configurable export/readonly/optional modifiers.