JSON to TS
Client-Side SecureFree online JSON to TypeScript Converter. Automatically generate TypeScript interfaces from your JSON objects. Save time and reduce errors.
JSON Converter
Generate Types & Schemas instantly.
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The Ultimate JSON to TypeScript & Zod Converter
Stop writing TypeScript interfaces manually. RootUtils provides a fast, secure, and client-side JSON to TS converter that instantly turns raw JSON data into strict type definitions.
Whether you are dealing with complex API responses, nested objects, or large datasets, our tool parses your JSON and outputs clean, production-ready code. We also support generating Zod Schemas for runtime validation in modern React apps.
Smart Array Merging
Most converters only look at the first item in an array. We scan every item to ensure your interface covers all possible fields, preventing runtime errors when data shapes vary.
Zod Validation
Building a form or using tRPC? Switch the mode to Zod to generate ready-to-use schemas. Validate your data at runtime with the same ease as static typing.
100% Privacy Focused
Your data never leaves your device. All conversions happen locally in your browser via JavaScript. We do not store, track, or transmit your JSON input.
How to Convert JSON to TypeScript
- Paste your JSON: Copy your raw JSON object or array into the left input panel.
- Choose your Output: Toggle between TypeScript Interfaces or Zod Schema using the buttons in the toolbar.
- Customize: Use the "Optional" toggle to make all fields optional (`?`), or "Readonly" to make them immutable.
- Copy & Use: Click the copy button and paste the result directly into your `types.ts` or `schema.ts` file.
Frequently Asked Questions
Does this tool handle nested objects?
Yes. The converter recursively parses nested objects and creates separate interfaces for them (e.g., `RootChild`, `RootItem`), keeping your code clean and modular.
Why use Zod instead of just TypeScript?
TypeScript types are erased at runtime. Zod schemas allow you to validate data while your application is running, which is critical for validating API responses or user form inputs.
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