JSON to TypeScript
Generate accurate TypeScript interfaces from JSON objects instantly.
JSON to TypeScript Interface Generator
Convert raw JSON data into clean, maintainable, and strictly typed TypeScript interfaces. Perfect for API integration and frontend development.
Core Features
Recursive Parsing
Automatically detects nested objects and arrays, creating separate exported interfaces for each level.
Custom Root Name
Define your own name for the target interface, making it ready to drop into your project files.
Clean Syntax
Generates standard TypeScript syntax using `export interface` blocks with consistent 2-space indentation.
Type Inference
Accurately identifies strings, numbers, booleans, and null values (falling back to `any` where ambiguous).
Quick Integration
One-click copy to clipboard ensures you Spend less time typing and more time building features.
Privacy First
Conversion happens entirely in your browser. sensitive JSON data never touches our servers.
Streamlined Workflow
Paste your sample JSON object or array into the input editor panel.
Set a Root Name (e.g., UserProfile) to use as the primary interface name.
Click "Generate Interfaces" to trigger the recursive parsing engine.
Copy the TypeScript code and paste it into your definitions or component files.
Perfect For
API Integration
Quickly create types for Axios or Fetch responses from API documentation samples.
Frontend State
Define Redux or Context state structures based on initial data snapshots.
Refactoring
Convert legacy JavaScript objects into strongly typed TypeScript counterparts.
Common problems this tool solves
Convert JSON to Typed Redux State
Quickly define Redux state slices by generating types directly from your JSON state snapshots.
Create TypeScript Types for Nested JSON Objects
Simplify deep data structures by automatically generating nested TypeScript types from complex JSON files.
Generate TypeScript Interfaces from API JSON Responses
Instantly create accurate TypeScript interfaces from any API payload. Save time on manual typing and reduce runtime errors.