JSON to TypeScript

Convert JSON data to TypeScript interfaces or type aliases instantly. This tool handles nested objects, arrays, union types, null values, and generates properly named interfaces for complex structures. All conversion happens client-side in your browser with no data sent to any server.

Ctrl/Cmd + Enter to convert

How to Use This Tool

  1. Paste your JSON data into the input textarea.
  2. Configure options: root interface name, interface vs type, optional properties, and export keyword.
  3. The TypeScript types are generated automatically as you type or edit options.
  4. Use Ctrl/Cmd+Enter to manually trigger conversion, or click the Copy button to copy the output.

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