JSON to TypeScript Interface Generator
Paste JSON and get a TypeScript interface with inferred types for each field.
Summary
Paste JSON and get a TypeScript interface with inferred types for each field.
How it works
- Paste sample JSON data
- Choose interface or type alias output
- Click Generate
- Copy the TypeScript definition
Use cases
- Typing API responses in TypeScript projects
- Bootstrapping DTO interfaces from JSON payloads
- Adding types to SDK client code from API docs
Frequently Asked Questions
Last updated: 2026-06-10 ·
Reviewed by Nham Vu