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  3. JSON to TypeScript

JSON to TypeScript

Generate TypeScript interfaces and types from JSON

Related Tools

  • JSON to Python - generate Python classes
  • JSON to Go - generate Go structs
  • JSON to C# - generate C# classes
  • JSON Schema Builder - build schemas

How to Use JSON to TypeScript

  1. Paste your JSON

    Copy and paste your JSON data into the input field.

  2. View TypeScript interfaces

    See TypeScript interfaces automatically generated from your JSON structure.

  3. Copy the result

    Click the Copy button to copy the TypeScript code to your clipboard.

Frequently Asked Questions

Is the JSON to TypeScript Generator free?
Yes, the JSON to TypeScript Generator is completely free with no usage limits. Generate TypeScript interfaces and types from JSON as often as you need without registration.
Is my JSON data secure?
Yes, all type generation happens locally in your browser. Your JSON data never leaves your device, making it safe to generate types from API responses containing sensitive or proprietary data structures.
What TypeScript code does it generate?
The tool generates TypeScript interfaces or type aliases based on your JSON structure. It infers types from values, handles nested objects and arrays, and creates properly typed definitions that you can use directly in your TypeScript projects.
How are optional properties handled?
The generator can mark properties as optional (using ?) when values are null or when analyzing multiple JSON samples where some properties are missing. You can also configure whether to use strict or optional typing.
Why generate TypeScript types from JSON?
Generating types from JSON saves time when working with APIs, ensures type safety in your TypeScript code, catches errors at compile time, improves IDE autocomplete, and keeps your types in sync with actual API response structures.