Input format

JSON converters

JSON is the lingua franca of web APIs. These tools turn a real JSON payload into typed code for whichever language you happen to ship in. The most popular pair is JSON → Zod for TypeScript projects.

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All JSON converters

15 conversions, all live.

JSON → Python dataclass

JSON → Kotlin data class

Sample JSON

Here's the default sample used across the converter pages. Each tool page has additional real-world samples (User profile, e-commerce order, etc.) you can switch to.

{
  "id": 1,
  "name": "Ada Lovelace",
  "email": "ada@example.com",
  "isAdmin": false,
  "tags": ["math", "engine"]
}