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JSON to TypeScript

Paste JSON and instantly generate TypeScript interfaces. Handles nested objects, arrays, and optional fields. Copy the generated types for your project.

  • 100% free
  • No signup
  • Runs in your browser
Common uses: json to typescript · generate typescript interface · json to ts · typescript type generator · json typescript converter

Used 44.3K times today

How to Use JSON to TypeScript

  1. 1

    Paste your JSON

    Enter a JSON object or array into the input field.

  2. 2

    Generate interfaces

    Click Generate to produce TypeScript interface declarations.

  3. 3

    Copy the output

    Copy the generated interfaces and paste them into your TypeScript project.

Frequently Asked Questions

Does it handle nested objects?
Yes. Nested objects generate nested interfaces with proper naming based on the key hierarchy.
Are arrays handled correctly?
Yes. JSON arrays generate typed array fields such as string[] or Item[].

Embed This Tool

Add this tool to your website for free. Just copy and paste the code below:

<iframe src="https://utilko.com/embed/json-to-typescript/" width="100%" height="500" frameborder="0" title="JSON to TypeScript"></iframe>

About JSON to TypeScript

The JSON to TypeScript converter on Utilko generates accurate TypeScript interfaces from any JSON structure instantly. Paste your API response or config object and get ready-to-use type definitions with proper nesting and array types.

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