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JSON to TypeScript Online Free

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Generate TypeScript interfaces from JSON. Nested objects become separate interfaces.

  • Processed in your browser
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  • No account required
  • Nothing uploaded by default

Examples

Simple object

{"name":"ToolBay","free":true}
export interface Root {
  name: string;
  free: boolean;
}

How JSON to TypeScript works

Generate TypeScript interfaces from JSON. Nested objects become separate interfaces. Output is Typescript-specific. Runs in your browser.

  1. 1. Paste JSON. Use a real API response so nested types come through.
  2. 2. Check the Typescript output. Scan names, optionals, and nested types.
  3. 3. Copy the code. Drop it into your project and adjust if the sample was incomplete.
  • Generate Typescript models from a real API JSON sample
  • Paste the output into an existing Typescript project
  • Simple object
Does it create interfaces or types?
Objects become interfaces; array roots and primitives use type aliases.

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