JSON to TypeScript Interface

What is the JSON to TypeScript Interface Tool?

The JSON to TypeScript Interface Tool is designed to help developers quickly and accurately convert any JSON data into fully-typed, readable, and customizable TypeScript definitions. Whether you’re working with API responses, configuration files, or mock data, this tool makes generating TypeScript types effortless and error-free.

Understanding JSON to TypeScript Conversion

When working with TypeScript, defining the structure of your data using interface or type helps with:

• Auto-completion
• Compile-time validation
• Clear documentation of expected data shapes

But manually writing TypeScript interfaces from large JSON data can be tedious and error-prone. That’s where this tool comes in.

Features and Options

Our generator goes beyond a basic conversion. It offers several customization options to match your coding style or project needs:

🏷️ Root Interface Name

Define the name of the top-level interface (e.g., User, ProductResponse, AppConfig). This helps ensure clarity and consistency across your codebase.

🔠 Prefix

Add a prefix to all generated types. This is useful for grouping or avoiding name collisions.

Example:

interface ApiUser { ... }
interface ApiAddress { ... }

🔄 Export Generated Types

Enable this option to automatically add export at the start of each type/interface—perfect for modular TypeScript codebases.

Example:

export interface User {
  ...
}

💡 Use type Instead of interface

Prefer the flexibility of type aliases? Enable this to generate:

export type User = {
  ...
}

Instead of:

export interface User {
  ...
}

Benefits of Using the Tool

• ✅ Save time writing types manually.
• ✅ Avoid errors by letting the tool infer nested structures and array shapes.
• ✅ Customize your output to match your project style.
• ✅ Improve readability and maintainability of your TypeScript code.

How to Use the JSON to TS Interface Tool

1. Paste Your JSON: Input any valid JSON data into the tool.
2. Adjust Settings: Choose your desired root name, prefix, export style, and whether to use type or interface.
3. View and Copy: Instantly see the generated code and copy it into your project.

Try the JSON to TypeScript Interface Tool

Ready to convert your JSON into clean, typed interfaces?
Use our JSON to TS Interface Tool to save time, reduce bugs, and write better TypeScript today.