TypeScript to Zod Schema Converter | Instant Online Generator

🧪 TypeScript to Zod

Convert TypeScript interfaces/types to Zod schemas (best-effort).

📝 Input TypeScript:
📤 Output Zod Schemas:
// Zod schema will appear here...
💡 Example TypeScript Samples:
📄 Simple Interface + Union
Basic interface + literal union
🔗 Nested Interfaces
Nested objects & arrays
🗂 Record & Date
Record<string, T> and Date

Streamline Your Data Validation with TypeScript to Zod

Maintaining both TypeScript interfaces and Zod schemas can lead to code duplication and synchronization errors. Our TypeScript to Zod tool solves this by automatically generating Zod schemas from your existing types. Bridge the gap between compile-time safety and runtime validation with a single click.

Key Features of Our Converter

  • Recursive Support: Automatically handles nested objects and complex interface hierarchies.

  • Full Type Coverage: Supports primitives, arrays, enums, unions, and optional properties.

  • Clean Output: Generates readable, idiomatic Zod code ready for your project.

  • Privacy First: All conversions happen locally in your browser—your code stays yours.

How to Convert TypeScript to Zod

  1. Input: Paste your TypeScript interface or type alias into the source editor.

  2. Process: The tool instantly parses the TypeScript AST (Abstract Syntax Tree).

  3. Output: Copy the generated z.object or z.union schema from the output window.

  4. Implement: Import z from zod in your project and start validating data.

Why Use Zod for Runtime Validation?

While TypeScript ensures your code is correct during development, it doesn't exist at runtime. Zod allows you to validate external data (like API responses or form inputs) to ensure they match your expected types.

1. Eliminate "Any" Types from API Responses

When fetching data from an API, Zod allows you to safely parse the response. By converting your TS interfaces to Zod, you ensure that the data entering your application logic is 100% valid and typed.

2. Establish a Single Source of Truth

Instead of manually updating both your types and your validation logic, use our converter to generate schemas. You can then use Zod's z.infer<typeof schema> to derive your TypeScript types back from the schema.

3. Detailed Error Reporting

Zod provides comprehensive error maps, making it easy to identify exactly why an input failed validation, which is much more robust than manual if-else checks.

Frequently Asked Questions

Does it support TypeScript Enums and Unions?

Yes. The tool converts TypeScript enum to z.nativeEnum() and union types (type A = B | C) to z.union() or z.discriminatedUnion() where applicable.

Can I convert complex nested interfaces?

Absolutely. The converter follows references and builds a nested Zod object structure that mirrors your TypeScript definitions exactly.

Is Zod better than JSON Schema?

Zod is often preferred in the TypeScript ecosystem due to its developer-friendly syntax and the ability to infer TypeScript types directly without additional build steps.

Pro Tips for Zod Schema Generation

  • Optional vs Nullable: Our tool correctly distinguishes between property?: string (optional) and property: string | null (nullable) in Zod.

  • Adding Validation Refinements: Once the schema is generated, you can easily chain methods like .email(), .min(), or .max() to add specific constraints that TypeScript cannot express.