JSON to TypeScript

Generate TypeScript interfaces from JSON. Paste JSON and get type definitions.

TypeScript Output:

 
 
 
  
  
 
 
What does JSON to TypeScript do?
 
Generates TypeScript interfaces or types from a JSON sample. Infers types from the structure: objects become interfaces, arrays become Type[], primitives map to string, number, boolean.
 
What is it used for?
 
     
  • API types: Generate types from API responses
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  • Type safety: Add types to untyped JSON
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  • Documentation: Describe data structures
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  • Onboarding: Quick types for new codebases
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How it works
 
Paste a JSON object or array. Click Generate. The tool recursively infers types. Export the result and use in your TypeScript project.
 
 
 
 

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