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JSON to TypeScript

Paste JSON and get TypeScript interfaces instantly. Handles nested objects, arrays, and union types. All processing happens in your browser.

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Input

Root interface name

export keyword

Optional properties (?) Readonly properties

JSON input

TypeScript output

// how it works

How it works

step 01

Paste any JSON object or array. The converter parses the structure and detects all data types.

step 02

TypeScript interfaces are generated with proper types, nested interfaces, and array generics.

step 03

Copy the TypeScript code to your clipboard or download it as a .d.ts file.

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