JSON to TypeScript Converter
Instantly generate TypeScript interfaces from your JSON data. Just paste your JSON on the left and get typed interfaces on the right.
📄 JSON Input
📘 TypeScript Output
Why convert JSON to TypeScript Interfaces?
When working with APIs in a strongly-typed language like TypeScript, creating interfaces manually for massive JSON responses is tedious and error-prone. Our **JSON to TypeScript** converter automates this process. It analyzes the structure of your JSON—including nested objects and arrays—and generates robust `interface` definitions ready to drop into your project.
🔍 Type Inference
We intelligently detect types: Strings, Numbers, Booleans, and even nested Arrays of objects.
📦 Nested Objects
Deeply nested JSON? No problem. We extract child objects into their own named interfaces for cleaner code.
Frequently Asked Questions
Is my JSON data data private?
Yes, 100%. All conversion happens right here in your browser using JavaScript. Your JSON data is never sent to any server.
How does it handle Arrays?
If an array contains primitive types (like strings), it generates `string[]`. If it contains objects, it generates a new interface for that object structure and uses `InterfaceName[]`.