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AiTechWorlds
AiTechWorlds
Convert any JSON into TypeScript interfaces or type aliases — with nested type inference.
Drag & drop a file, upload, or paste directly
TypeScript interfaces will appear here…The JSON to TypeScript Interface Generator converts any JSON object into properly typed TypeScript interfaces. It handles nested objects (generating named sub-interfaces), arrays (typed as T[]), nullable fields (T | null), and all primitive types. Options include interface vs. type alias, readonly fields, and optional (?) properties.
Paste JSON
Enter your JSON in the input textarea, or click the Sample button to load an example.
Set options
Toggle interface vs type alias, readonly, and optional fields as needed.
Copy the TypeScript
The generated interfaces appear in the output panel — copy them directly into your project.
100% Private — No Server Required
All processing happens directly in your browser. No data is uploaded, stored, or transmitted to any server.