JSON to TypeScript Generator

Convert JSON objects into TypeScript interfaces instantly. Paste API responses and get clean, export-ready types — 100% in your browser.

100% In-Browser & Private — your data never leaves this device

PeachTools Pro

Batch processing, unlimited files, ad-free.

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How to use the JSON to TypeScript Generator

  1. Paste a JSON object or array into the input area, or load the sample JSON.
  2. Optionally set a root type name for the generated interface.
  3. Review the generated TypeScript interfaces with nested types inferred automatically.
  4. Copy or download the output and paste it directly into your codebase.

FAQ

Is my JSON uploaded to a server?
No. All conversion happens locally in your browser. Your JSON never leaves your device.
Can I convert multiple JSON files at once?
The free tier converts one JSON object at a time. PeachTools Pro supports bulk JSON files and Zod, Prisma, and GraphQL schema output.

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