JSON to TypeScript Interface Generator
Generate TypeScript interfaces from JSON data. Supports nested objects and arrays.
Frequently Asked Questions
How do I generate TypeScript interfaces from JSON?
Paste your JSON data into the input box. Our tool automatically infers types and generates clean TypeScript interfaces, including nested objects and arrays.
How are nested objects handled?
Nested objects are extracted into separate named interfaces. Interface names are derived from property names in PascalCase (e.g., address becomes Address).
Does this support arrays and optional fields?
Yes, arrays are typed based on element types (e.g., number[] or string[]). Empty arrays are typed as unknown[]. All fields from the sample are generated as required.
Can I use this for API response types?
Absolutely. Paste an API response JSON and get ready-to-use TypeScript interfaces for your frontend application.
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