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JSON to TypeScript

Generate TypeScript interfaces from JSON instantly. Supports nested objects, arrays, and all primitive types.

Quick Answer & Summary

The JSON to TypeScript is a fast, accurate Developer utility designed to generate typescript interfaces from json instantly. supports nested objects, arrays, and all primitive types. entirely in your browser with zero server data storage.

JSON Input

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Toolbox Editorial TeamVerified Authors

Systems & Security Engineers • Applied Cryptography & High-Performance Web Tools

Updated:
100% In-BrowserZero server storage
Standards AuditedRFC & ISO compliant
Peer ReviewedEditorial Policy
Documentation & Guide

How to Use JSON to TypeScript

1

Paste your JSON

Paste any valid JSON — an API response, config file, or sample data.

2

Set root name

Optionally name the root interface (default: Root).

3

Copy the interfaces

Click Generate and copy the TypeScript interfaces for use in your project.

Pro Tips
Nested objects become separate named interfaces
Arrays of primitives produce typed arrays (string[], number[])
Arrays of objects generate an item interface (e.g. UserItem[])

Practical Examples & Conversions

Input
{"id": 1, "name": "Alice", "email": "alice@example.com"}
Output
interface Root {
  id: number;
  name: string;
  email: string;
}

Related Tools & Converters

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Authoritative Standards & Citations

Calculations and algorithms on this page are implemented and verified in strict accordance with the following official technical specifications:

IETF (Internet Engineering Task Force)

RFC 7519: JSON Web Token (JWT)

Standardized compact, URL-safe means of representing claims to be transferred between two parties.

W3C Recommendation

Web Cryptography API Specification

Standard JavaScript API for performing basic cryptographic operations in web applications.

IETF Standards Track

RFC 4122: A Universally Unique IDentifier (UUID) URN Namespace

Definition of uniform format and generation algorithms for UUIDs.