JSON to TypeScript Interface Generator - Online Free
Generate TypeScript interfaces from any JSON object automatically. Paste JSON and get ready-to-use TypeScript types instantly.
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iAbout JSON to TypeScript
Automatically generate TypeScript interface definitions from any JSON object or array. Handles nested objects, arrays, primitives, and null values. Produces properly named, export-ready TypeScript interfaces — great for quickly typing API responses.
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?Frequently Asked Questions
Does it handle nested objects?
Yes! Nested objects are extracted into their own named interfaces. Arrays get typed based on their element types.
Can I use this for API responses?
Yes — paste any JSON response and get TypeScript interfaces ready to paste into your code.
Are the interfaces exported?
Yes, all interfaces are generated with the export keyword.