JSON to TypeScript Interface Generator

Generate TypeScript interfaces from JSON instantly. Free online JSON to TypeScript converter for type-safe development.

JSON Input

Generated Code

Click Generate to see output

About This Tool

Generate TypeScript interfaces from JSON data in one click. This is the fastest way to create type definitions for API responses, configuration objects, and data models in your TypeScript projects.

The converter handles nested objects, arrays of objects, optional fields, and complex type hierarchies. The output uses proper TypeScript syntax with readonly modifiers for literal types.

Perfect for frontend developers working with React, Vue, or Angular who need to quickly type API responses. Simply copy the JSON from your browser's network tab and paste it here to get production-ready interfaces.

All processing is done locally in your browser. No data is sent to any server, ensuring your API payloads remain private and secure.

Boost your TypeScript productivity by eliminating repetitive type definition work. Use it for REST API integration, GraphQL response typing, or defining complex state shapes in your applications.