JSON to TypeScript Interface
Infer TypeScript interfaces or type aliases from JSON data.
About the JSON to TypeScript Interface
Paste a JSON object or array and instantly generate matching TypeScript interfaces or type aliases, with nested objects and arrays turned into their own named types.
Examples
Simple object
JSON{ "id": 1, "name": "Ada" }Output
CSSinterface RootObject {
id: number;
name: string;
}Keyboard shortcuts
- Copy the main outputCtrl / ⌘ + Shift + C
- Download the resultCtrl / ⌘ + S
- Share this toolCtrl / ⌘ + Shift + S
- Reset the inputsAlt + R
- Open the tool search paletteCtrl / ⌘ + K
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Frequently asked questions
Read more
- Structured data (JSON-LD) that search engines actually use
Most schema.org types have no effect on search results. Here are the ones that do, and how to mark them up correctly.
Version 1.0.0 · Updated 2026-08-06 · Runs entirely in your browser