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JSON to TypeScript

Automatically generate TypeScript interfaces from a JSON payload.

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Guide

Usage, privacy, and related tools

Best for

  • Frontend developers needing quick types for API responses

Privacy

100% local processing. Paste sensitive JSON with confidence—it never leaves your device.

Quick tips

  • Ensure the JSON is perfectly valid before pasting, as errors will prevent type generation.

How to use this tool

  1. Paste a valid JSON object or array.
  2. Provide a name for the top-level interface (e.g. UserResponse).
  3. The resulting TypeScript definitions appear instantly on the right.

Common questions

Does this handle nested objects?

Yes, it recursively creates interfaces for nested objects and arrays.

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