Paste sample JSON
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Code & Data Tool
JSON to TypeScript Interface
Generate a basic TypeScript interface from sample JSON.
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About this tool
What is JSON to TypeScript Interface?
JSON to TypeScript Interface generates a basic TypeScript interface from sample JSON, saving you from typing types by hand for API responses.
Useful when you need to
- Type an API response quickly
- Start a data model for a project
- Learn how JSON maps to types
How to use
How to use JSON to TypeScript Interface
01 02 Generate
Run the tool.
03 Review the types
Check for fields that should be optional or have a union type.
04 Copy
Paste into your code.
Tips
Get better results
- Types are inferred from one sample, so fields that vary between responses need manual edits.
- Rename the interface to suit your project.
FAQ
Frequently asked questions
Is it a perfect type?
It is a starting point based on the sample you give.
Does it handle nested objects?
Yes, nested structures are represented.
Is it private?
Yes.
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