JSON to TypeScript
Generate TypeScript types from any JSON.
✓ Generated 3 definition(s)
About JSON to TypeScript
JSON to TypeScript instantly turns any JSON into clean, ready-to-use TypeScript type definitions. Paste an API response or config object and get accurate interfaces — with nested objects, arrays and optional fields all handled for you.
It saves developers from writing types by hand, cuts down on runtime bugs, and keeps your codebase strongly typed. The conversion runs entirely in your browser, so your data never leaves your machine.
Choose between interfaces or type aliases, set a root name, and copy the result straight into your project — a real time-saver when working with third-party APIs.
How to use JSON to TypeScript
- Enter or paste your input.
- Pick the format you want to convert to.
- Copy the converted result instantly.
Frequently asked questions
Does it handle nested objects and arrays?
Yes — nested objects become their own named interfaces, and arrays infer their element type, merging keys across items where needed.
Is my JSON kept private?
Yes. The conversion happens in your browser; nothing is uploaded.
Can I choose interface vs type?
Yes — toggle between TypeScript interfaces and type aliases, and set the root type name.