JSON to TypeScript
Convert JSON objects to TypeScript interfaces and types
⚙️Options
// TypeScript output will appear here...
JSON to TypeScript Converter
Convert JSON data to TypeScript interfaces and type aliases instantly. This tool analyzes your JSON structure and generates properly typed TypeScript definitions, handling nested objects, arrays, union types, and null values. Ideal for developers working with REST APIs, configuration files, or any JSON data source that needs TypeScript type safety.
Key Features
- Recursive interface generation for deeply nested objects
- Smart array type detection with union type support
- Toggle between interface and type alias syntax
- Optional properties, readonly modifiers, and export keywords
- Automatic naming of nested interfaces from parent keys
- Handles null, string, number, boolean, and complex types
- One-click copy of generated TypeScript code
- Sample JSON data for quick testing
Perfect For
- Frontend developers consuming REST APIs
- Backend developers creating TypeScript DTOs
- Full-stack developers building type-safe applications
- Teams migrating JavaScript codebases to TypeScript
- API designers documenting response shapes
- Students learning TypeScript type systems
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