JSON to TypeScript Converter
Convert JSON payloads and REST responses into strong TypeScript interfaces and type aliases with automatic nested structure generation.
About JSON to TS Converter
Convert JSON objects into TypeScript interfaces and type aliases automatically. Paste API responses or config samples to bootstrap typed models in frontend and backend projects.
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Key Capabilities
- Infers interfaces from JSON structure
- Handles nested objects and arrays
- Optional readonly and export modifiers
- Copy-ready TypeScript output
- Local parsing — no API data sent out
- Free for developers
How to use JSON to TS Converter
- 1
Paste representative JSON sample data.
- 2
Review generated interface names.
- 3
Regenerate if you add optional fields to the sample.
- 4
Copy TypeScript types to your project.
- 5
Refine edge cases like union types manually.
Frequently Asked Questions
Will optional fields be detected?
Only fields present in your sample appear. Include nullable keys in the JSON for accurate optional typing.
Can it handle arrays of objects?
Yes. Arrays generate typed element interfaces with inferred property names.
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