Zod is a TypeScript-first schema validation library. You define a schema once and Zod infers the static TypeScript type automatically. It is widely used with React Hook Form, tRPC, and Next.js for validating API responses, form inputs, and environment variables.

What does the JSON to Zod converter output?

The converter outputs a Zod schema (e.g., z.object({ name: z.string(), age: z.number() })) exported as a const, plus an inferred TypeScript type exported via z.infer .

JSON to Zod Schema

Generate Zod schema definitions from JSON with AI.

Zod is the most popular TypeScript validation library — but writing schemas manually for every API response is tedious. Paste any JSON object and instantly get a Zod schema with inferred types and a ready-to-use TypeScript type via z.infer<>.

Paste your code, then click Convert

Zod Schema

How to use this tool?

This online converter harnesses AI to generate Zod schema definitions from JSON data. Follow these steps:

Type or paste your JSON object into the input box provided.
Click the "Convert" button to generate the Zod schema with correct types.
View the Zod schema and inferred TypeScript type in the output box, ready to use in your project.

Example: Simple Function

JSON

// JSON
{
  "name": "Alice",
  "age": 30,
  "active": true
}

Zod Schema

import { z } from 'zod';

export const RootSchema = z.object({
  name: z.string(),
  age: z.number(),
  active: z.boolean(),
});

export type Root = z.infer<typeof RootSchema>;

Frequently Asked Questions

What is Zod?

Zod is a TypeScript-first schema validation library. You define a schema once and Zod infers the static TypeScript type from it automatically. It is widely used with React Hook Form, tRPC, Next.js, and API validation to ensure data matches expected shapes at runtime.

What does the converter output?

The output includes a named Zod schema const (e.g. export const UserSchema = z.object({...})) and an exported TypeScript type inferred from it (export type User = z.infer<typeof UserSchema>), plus the required import statement.

Does it handle nested JSON objects?

Yes. Nested JSON objects are converted to nested z.object() calls. Arrays become z.array(z.string()), z.array(z.object({...})), etc. based on their element types.

Do I need to install Zod?

Yes — in your project run: npm install zod. The generated schema uses z from 'zod' which you import at the top of your file.

Is the tool free?

Yes, completely free with no account required.