🔄 TypeScript to Zod Schema Generator

// Paste TypeScript type definitions on the left to auto-generate Zod Schemas

What Can the TypeScript to Zod Schema Generator Do?

The TypeScript to Zod Schema Generator is an online tool for TypeScript developers that automatically converts TypeScript interface and type definitions into Zod validation Schemas. When you need runtime validation of external data (API responses, form inputs, etc.), this tool helps you quickly generate corresponding Zod validation code from existing TypeScript types, achieving end-to-end type safety.

Core Features

• Interface/Type Parsing: Supports both interface and type alias TypeScript definitions, auto-parsing property names, types, and modifiers
• Primitive Type Mapping: string→z.string(), number→z.number(), boolean→z.boolean(), null→z.null(), undefined→z.undefined()
• Advanced Type Support: optional→.optional(), union→z.union(), literal→z.literal(), array→z.array(), nested object→z.object()
• Flexible Naming: Schema suffix naming (UserSchema) or prefix naming (SchemaUser)
• Complete Imports: Auto-generates Zod import statements in named or namespace import style

How to Use

1. Paste your TypeScript interface or type definitions in the input box; 2. Select import style and Schema naming convention; 3. The tool auto-generates Zod Schema code in real-time; 4. Click "Copy" to copy the generated code; 5. Add it to your project and use z.infer for automatic TypeScript type inference.

Use Cases

Case 1: API Response Validation

Validate API response data with Zod Schemas to ensure runtime data matches TypeScript type definitions, preventing unexpected backend data from causing runtime errors.

Case 2: Form Validation

Convert form TypeScript types to Zod Schemas for validation rules in libraries like React Hook Form, achieving type-safe form handling.

Case 3: Database Query Validation

Validate ORM query results with Zod Schemas after database operations to ensure data integrity during transmission and transformation.

Case 4: Configuration File Validation

Convert config file TypeScript types to Zod Schemas to validate environment variables and config files at application startup, catching configuration errors early.

Extended Knowledge

Zod is the most popular runtime validation library in the TypeScript ecosystem, created by Colin McDonnell. Its core advantage is "Schema as Type" — define a Zod Schema and automatically infer the corresponding TypeScript type via z.infer, eliminating the need to maintain two separate type definitions. Zod supports chainable APIs (e.g., z.string().min(1).max(100)), custom error messages, async validation, transform/pipe, and more. It's widely used in Next.js, tRPC, React Hook Form, and other major frameworks.