TypeScript Generator
Paste JSON and instantly generate TypeScript interfaces and type definitions.
Input JSON
TypeScript Output
Paste JSON and hit “Generate” to see TypeScript interfaces here.
About TypeScript Generators
TypeScript interfaces provide compile-time type checking for your JavaScript code. Generating interfaces from JSON is a common workflow when integrating with APIs — this tool analyses your JSON structure and produces clean, nested interfaces automatically.
Features
- Convert any JSON object or array to TypeScript interfaces
- Supports nested objects and arrays of objects
- Handles mixed-type arrays with union types
- Detects optional fields when merging array items
- Customisable root interface name
- One-click copy to clipboard