JSON to TypeScript Interface Converter - Free, Instant, In Your Browser
Paste a JSON sample to get a matching TypeScript interface definition, saving you from typing it out by hand.
How to use JSON → TYPESCRIPT
- 1Paste your text or data into the input box above.
- 2JSON → TYPESCRIPT runs instantly, right in your browser.
- 3Copy the result or use it directly.
Your file is processed in your browser and is never uploaded.
Frequently Asked Questions
Does this handle nested objects and arrays?
Yes - nested objects become nested interfaces, and arrays are typed based on their first element.
Is my data sent to a server?
No, conversion happens entirely in your browser.