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JSON to TypeScript

Generate TypeScript interfaces from JSON — instantly in your browser.

Root name

JSON Input

TypeScript Output

What is this tool?

This tool converts JSON objects into TypeScript interfaces. It handles nested objects, arrays, and mixed types automatically.

How to Use

Paste JSON — Enter your JSON object in the left panel
Set root name — Name the top-level interface (default: Root)
Convert — Click Convert to generate TypeScript interfaces
Copy — Copy the generated code to your clipboard

Features

Nested object support — generates separate interfaces
Array type inference — detects element types
Safe key handling — quotes invalid identifiers
Customizable root interface name

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