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 only processed temporarily for the conversion and is automatically deleted within 24 hours.
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.