Code Utilities utility
JSON to TypeScript
Convert a JSON object sample into a TypeScript type alias with inline nested types.
● This tool runs entirely in your browser. Your input is never uploaded to our servers.
Output
Your result will appear here…
How to use JSON to TypeScript
- Paste a JSON object sample.
- Select Generate Code to create a Root type alias.
- Check optional properties and value unions against your source schema.
Example
Input:
{"id":1,"name":"Ada","tags":["admin","editor"]}Output:
export type Root = {
id: number;
name: string;
tags: string[];
};Use cases
- Create a type alias for a JSON fixture.
- Translate simple API examples into TypeScript.
- Compare inline types with named interfaces.
About this tool
Convert a JSON object sample into a TypeScript type alias with inline nested types. Processing happens locally in your browser, so your input is not sent to a server or included in analytics.
Frequently asked questions
How does this differ from the interface generator?
This tool emits a type alias with inline nested object types; the interface generator emits named interfaces for nested objects.
Does one sample reveal optional fields?
No. All observed properties are treated as required.
Is conversion performed on a server?
No. JSON is processed locally in your browser.