JSON Schema to TypeScript

Convert a JSON Schema document into TypeScript interfaces or types. Review and refine output before use — generated types are a starting point.

  • Runs entirely in your browser
  • No data stored or sent to a server
  • Free forever — no signup
  • Instant conversion

Input and Output

Use the interactive encoder and decoder on this page to process your text.

Learn more about JSON

How to Convert JSON Schema to TypeScript

Schema to TypeScript

When to Generate Types from Schema

Bootstrap TypeScript interfaces from OpenAPI or standalone JSON Schema documents when building API clients, form validators, or config typings. Faster than hand-writing types for large nested objects.

Generated Output

Produces export interface or export type declarations from object, array, enum, and primitive schema nodes. Complex keywords like allOf may map to unknown — review before shipping.

Developer Tips

  • Treat output as a starting point — refine optional fields and unions manually
  • Prefer official codegen for production OpenAPI clients when available
  • Set a meaningful root type name in tool settings for nested exports

Frequently asked questions

Is this the same as JSON to TypeScript?

No. JSON to TypeScript infers from sample data; this reads JSON Schema type definitions.

Are generated types guaranteed correct?

No. Review output — edge-case schema keywords may simplify to unknown.