JSON to TypeScript Interface
Convert JSON data to TypeScript interface definitions. Auto-infer types, support nested objects and array types.
Input
Output
TypeScript interface will appear here
What is JSON to TypeScript Interface?
JSON to TypeScript interface tool can automatically generate TypeScript interface or type definitions based on JSON data structure. The tool analyzes each JSON field type (string, number, boolean, null, etc.) and generates corresponding TS interfaces. For nested objects, independent interface definitions are generated; for arrays, [] type markers are automatically added. Generated interfaces can be used directly in TypeScript projects, providing type safety guarantees.
When to Use JSON to TypeScript Interface
Use when generating TypeScript type definitions for API responses, creating frontend data models, generating interface contracts from JSON data, or defining data structures in frontend-backend collaboration.
How to Use JSON to TypeScript Interface
Paste JSON data into the input area. Enter the root interface name (optional, defaults to Root). Click the "Convert" button, and the generated TypeScript interfaces will be displayed in the output area.
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