JSON to TypeScript Interface Generator
Free Online JSON to TypeScript Interface Converter
Convert JSON data into TypeScript interfaces with advanced options for naming conventions, optional properties, and strict typing.
Conversion Options
Customize how your TypeScript interfaces are generated
JSON Input
Paste your JSON data or upload a JSON file
TypeScript Output
Generated TypeScript interfaces
Smart Type Detection
Automatically detects and converts JSON types to appropriate TypeScript types including union types for mixed arrays.
Nested Interfaces
Creates separate, reusable interfaces for nested objects and handles complex data structures efficiently.
Customizable Options
Choose naming conventions, optional properties, export keywords, and strict mode to match your coding standards.
Frequently Asked Questions
Simply paste your JSON data into the input field and click 'Generate Interfaces'. The tool will automatically analyze your JSON structure and create corresponding TypeScript interfaces with proper typing.