Entwickler-Tools

JSON to TypeScript

Paste JSON and instantly get TypeScript interfaces or type aliases with nested types

JSON Input
TypeScript Output

How it works

  • • Paste any valid JSON and get a TypeScript interface or type alias.
  • • Nested objects become inline types. Arrays are inferred from the first element.
  • • Change the root name to customize the top-level identifier.
  • • Everything runs locally in your browser — no data is sent anywhere.

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JSON to TypeScript — Free Online Tool | FreeTool