How to Convert JSON to TypeScript Interfaces
Step-by-step guide to generating TypeScript type definitions from a JSON sample using the DevHexLab JSON to TypeScript tool.
Tool Used
JSON to TypeScript
1
Open the JSON to TypeScript tool
Navigate to /tools/javascript/json-to-typescript.
2
Paste a JSON sample
Paste an example JSON object representing the data structure you want to type. The tool infers types from the values it finds.
3
Review the interfaces
The tool produces TypeScript interfaces with property names and inferred types (string, number, boolean, array, or nested interfaces). Optional fields are marked with a question mark.
4
Copy into your project
Click Copy and paste the interfaces into your TypeScript project. You can rename the root interface to match your domain model.
All done!
You are ready to use JSON to TypeScript like a pro.