devcrate / JSON / JSON to TypeScript Converter
JSON

JSON to TypeScript, instantly.

Paste any JSON object or API response and get back a typed interface — nested objects become their own named types, arrays are typed from their first element, and null fields are marked optional.

runs entirely in your browser — nothing is uploaded
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How to use the json to typescript converter

  1. Paste a JSON object, or click "Load sample" to see it in action.
  2. Choose whether you want interface or type syntax, and set a name for the root type.
  3. Click Convert. Nested objects automatically become their own named interfaces.
  4. Click Copy and paste the result straight into your .ts file.

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