JSON to TypeScript
Generate accurate TypeScript interfaces and type definitions from your JSON data instantly. All processing runs in your browser — your data never leaves your device.
Why use our JSON to TypeScript converter?
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Accurate Types
Generate precise TypeScript interfaces from your JSON data structure.
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Nested Objects
Handle deeply nested objects with proper interface composition.
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Union Types
Detect optional fields and generate accurate union types.
Common use cases
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API Integration
Generate types for API responses instead of writing them manually.
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Data Migration
Create type definitions when migrating from untyped to TypeScript codebases.
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Documentation
Auto-generate type documentation from real data samples.
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Schema Validation
Use generated types as the basis for runtime validation.
Related tools
Frequently Asked Questions
Try the full JSON toolkit
Format, validate, diff, convert — all in one place, 100% browser-side.
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