JSON to TypeScript Interface
JSON to TypeScript Interface
About JSON to TypeScript Interface
Generate TypeScript interfaces from JSON data. Automatically infer types and create type-safe definitions for your API responses and data models.
JSON to TypeScript Interface FAQs
How does type inference work?
The tool analyzes each value in your JSON to determine its TypeScript type: strings become 'string', numbers become 'number', booleans become 'boolean', null becomes 'null', arrays infer their element type, and nested objects generate sub-interfaces.
Does it handle arrays of mixed types?
Yes. If an array contains mixed types, the tool generates a union type. For example, an array with strings and numbers becomes '(string | number)[]'.
Can I customize the interface name?
The root interface is named 'Root' by default. You can rename it after copying the output to match your project's naming conventions.