Free JSON to Type Generator
Convert JSON to TypeScript interfaces, Go structs, or Rust types. Free, fast, and works entirely in your browser with no sign-up required.
JSON to Types Converter
Convert JSON to TypeScript, Go, Rust, Python, C#, Java, Kotlin, Swift, Dart, Scala, PHP, or Zod schemas.
JSON Input
Generated TypesTypeScript
interface User {
id: number;
name: string;
email: string;
isActive: boolean;
profile: Profile;
tags: string[];
metadata?: null;
}
interface Profile {
bio: string;
avatar: string;
social: Social;
}
interface Social {
twitter: string;
github: string;
}Frequently Asked Questions
What is JSON to Types?
JSON to Types is a free online tool that converts JSON data into type definitions for TypeScript interfaces, Go structs, Rust types, and other languages.
Is JSON to Types free?
Yes, it is completely free with no registration required. All conversion happens client-side in your browser.
What output languages are supported?
JSON to Types generates type definitions for TypeScript, Go, Rust, Python (dataclasses), and other statically-typed languages.
Is my data safe with this tool?
Absolutely. The JSON to Type Generator processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.
Does the JSON to Type Generator work on mobile devices?
Yes, the JSON to Type Generator is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.
Do I need to create an account to use this tool?
No account or registration is needed. Simply open the JSON to Type Generator in your browser and start using it immediately. There are no sign-up walls or usage restrictions.
How do I use the JSON to Type Generator?
Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.
Which browsers are supported?
The JSON to Type Generator works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.
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About Free JSON to Type Generator
Free JSON to Type Generator is a free, browser-based tool in our Developer Tools collection. Everything runs locally on your device — no uploads, no sign-up, and your data stays private.